1. Medicine (Level 2)
   1. First aid (Level 4)
      1. First aid kit
   2. Health care (Level 4)
2. Medical ethics (Level 4)
3. Medical device
4. Medical emergency
5. Medicalization
6. Emergency medical services (Level 4)
7. Germ theory of disease
8. Healthcare industry
9. Coma (Level 4)
   1. Vegetative state (Level 4)
10. Search and rescue
11. Triage
12. White coat

This section contains 11 articles.

1. Health professional
2. Emergency medical technician
3. Nursing (Level 3)
   1. Midwifery
4. Paramedic
5. Pharmacist (Level 4)
6. Physician (Level 4)
   1. General practitioner
7. Surgeon
   1. Dentist
8. Veterinarian

This section contains 11 articles.

1. Health facility
2. Hospital (Level 3)
3. Clinic
4. Doctor's office
5. Emergency department (Level 4)
6. Intensive care unit
7. Operating theater
8. Pharmacy (Level 4)
9. Psychiatric hospital (Level 4)
10. Residential treatment center
11. Trauma center

This section contains 10 articles.

1. Medical procedure
2. Anesthesia (Level 3)
   1. General anaesthesia
   2. Local anesthesia
3. Blood donation
4. End-of-life care
   1. Hospice
   2. Palliative care (Level 4)
5. Medical test (Level 4)
6. Sterilization (medicine) (Level 4)

This section contains 30 articles.

1. Medical diagnosis (Level 4)
2. Physical examination (Level 4)
3. Screening (medicine)
4. Auscultation
   1. Heart sounds
   2. Respiratory sounds
5. Autopsy (Level 4)
6. Biopsy (Level 4)
7. Blood test (Level 4)
   1. Blood culture
   2. Complete blood count
   3. Comprehensive metabolic panel
   4. Glucose test
   5. Lipid profile
8. Diagnostic microbiology
9. Eye examination (Level 4)
10. Lumbar puncture (Level 4)
11. Palpation
12. Pap test (Level 4)
13. Percussion (medicine)
14. Reflex (Level 4)
15. Telehealth
16. Urine test
    1. Drug test
    2. Pregnancy test
17. Vital signs
    1. Blood pressure (Level 4)
    2. Human body temperature
    3. Pulse (Level 4)
    4. Respiratory rate

This section contains 41 articles.

1. Blood transfusion (Level 4)
2. Cardiopulmonary resuscitation
3. Cauterization
4. Cure
5. Defibrillation
6. Mouth-to-mouth resuscitation
7. Oxygen therapy
8. Speculum (medicine)
9. Symptomatic treatment (Level 4)
10. Tracheal intubation

This section contains 7 articles.

1. Crown (dental restoration)
2. Dental braces
3. Dental extraction
4. Dental implant
5. Dental restoration (Level 4)
6. Root canal treatment
7. Impacted wisdom teeth

This section contains 12 articles.

1. Surgery (Level 3)
2. Amputation (Level 4)
3. Angioplasty
4. Caesarean section
5. Debridement
6. Hysterectomy
7. Incision and drainage
8. LASIK
9. Neurosurgery
10. Organ transplantation (Level 4)
11. Plastic surgery (Level 4)
12. Reduction (orthopedic surgery)

This section contains 12 articles.

1. Therapy (Level 4)
2. Chemotherapy (Level 4)
3. Hemodialysis
4. Intravenous therapy
5. Massage
6. Occupational therapy
7. Oral rehydration therapy
8. Phage therapy
9. Pharmacotherapy
10. Physical therapy (Level 4)
11. Radiation therapy (Level 4)
12. Reperfusion therapy

1. Human body (Level 3)
   1. Cadaver
   2. Human variability
2. Blood type (Level 4)
   1. ABO blood group system
   2. Rh blood group system
3. Celiac plexus
4. Human head
   1. Human brain (Level 4)
   2. Forehead
   3. Brow ridge
   4. Face (Level 4)
      1. Human eye (Level 4)
      2. Human nose
   5. Facial skeleton
      1. Mandible
   6. Human mouth
      1. Human tooth (Level 4)
         1. Root canal (Level 4)
      2. Uvula
      3. Tonsil
   7. Chin
5. Human digestive system
   1. Gastrointestinal tract (Level 4)
6. Human musculoskeletal system
   1. Human back
      1. Latissimus dorsi muscle
   2. Human skeleton (Level 4)
   3. Shoulder
      1. Deltoid muscle
   4. Pectoralis major
   5. Pelvic floor
   6. Rectus abdominis muscle
7. Human skin
   1. Wrinkle
8. Human voice (Level 4)
9. Arm (Level 4)
   1. Biceps
   2. Forearm
   3. Hand (Level 4)
      1. Finger (Level 4)
         1. Thumb
         2. Index finger
         3. Middle finger
         4. Ring finger
         5. Little finger
   4. Triceps
10. Hip
    1. Gluteus maximus
11. Human reproductive system
    1. Female ejaculation
       1. G-spot
    2. Human penis
    3. Vulva
       1. Labia
12. Human anus
    1. Hemorrhoid
13. Human leg (Level 4)
    1. Calf (leg)
    2. Hamstring
    3. Thigh
    4. Foot (Level 4)
       1. Toe

1. Medical specialty
2. Allied health professions
3. Alternative medicine (Level 4)
   1. Chiropractic (Level 4)
   2. Herbal medicine (Level 4)
      1. Medicinal plants
   3. Homeopathy (Level 4)
   4. Naturopathy
   5. Osteopathy
   6. Quackery
4. Anesthesiology
5. Angiology (Level 4)
6. Audiology
7. Cardiology (Level 4)
8. Dentistry (Level 3)
   1. Orthodontics
9. Dermatology (Level 4)
10. Endocrinology
11. Emergency medicine
12. Family medicine
13. Gastroenterology (Level 4)
14. Geriatrics (Level 4)
15. Hematology (Level 4)
16. Hepatology
17. Immunology (Level 4)
18. Infectious diseases (medical specialty)
19. Internal medicine
    1. Acute medicine
20. Intensive care medicine
21. Life extension
    1. Senescence
    2. Supercentenarian
22. Medical genetics
23. Medical microbiology
24. Nephrology
25. Neurology (Level 4)
26. Nuclear medicine
27. Occupational medicine
28. Oncology (Level 4)
29. Ophthalmology (Level 4)
30. Optometry (Level 4)
31. Orthopedic surgery
32. Orthotics
33. Otorhinolaryngology (Level 4)
34. Pathology
35. Pediatrics (Level 4)
    1. Neonatology
36. Pharmacology (Level 4)
    1. Pharmacodynamics
    2. Pharmacokinetics (Level 4)
    3. Prescription drug (Level 4)
37. Podiatry
38. Psychiatry (Level 4)
39. Public health (Level 4)
    1. Epidemiology (Level 4)
    2. Health education
    3. Preventive healthcare (Level 4)
    4. WASH
40. Pulmonology (Level 4)
41. Radiology (Level 4)
42. Reproductive medicine
    1. Andrology
    2. Obstetrics and gynaecology (Level 4)
       1. Obstetrics
       2. Gynaecology
    3. Sexual and reproductive health (Level 4)
43. Rheumatology
44. Sports medicine
45. Toxicology (Level 4)
46. Traditional medicine (Level 4)
    1. Ayurveda (Level 4)
    2. Traditional Chinese medicine (Level 4)
       1. Acupuncture (Level 4)
       2. Chinese herbology
       3. Tui na
47. Traumatology
48. Urology (Level 4)
49. Vaccination (Level 4)
50. Veterinary medicine (Level 4)

This section contains 25 articles.

1. Drug (Level 3)
2. Adverse effect
3. Drug class
   1. Anatomical Therapeutic Chemical Classification System
   2. Depressant
   3. Hallucinogen
   4. Sedative
   5. Stimulant
4. Drug interaction
5. Medication (Level 3)
6. Placebo (Level 4)
7. Psychoactive drug
8. Drug delivery
   1. Dosage form
      1. Capsule (pharmacy)
      2. Inhaler
      3. Nebulizer
      4. Tablet (pharmacy)
   2. Route of administration
      1. Injection (medicine)
      2. Oral administration
      3. Topical medication
9. Drug discovery
10. Side effect
11. WHO Model List of Essential Medicines

This section contains 126 articles.

1. Amphetamine (Level 4)
   1. Methamphetamine
2. Bronchodilator
   1. Salmeterol
   2. Salbutamol
3. Calamine
4. Carbamazepine
5. Ephedrine
6. Epinephrine (medication)
7. Gabapentin
8. Heparin
9. Hydrocortisone
10. Insulin (medication)
11. Loperamide
12. Propranolol
13. Sildenafil
14. Warfarin

This section contains 14 articles.

1. Anesthetic
2. General anaesthetic
   1. Atropine
   2. Halothane
   3. Isoflurane
   4. Ketamine
   5. Midazolam
   6. Nitrous oxide (medication)
   7. Propofol
3. Local anesthetic
   1. Benzocaine
   2. Bupivacaine
   3. Lidocaine
   4. Procaine

This section contains 6 articles.

1. Antihistamine
2. Cimetidine
3. Diphenhydramine
4. Hydroxyzine
5. Loratadine
6. Ranitidine

This section contains 30 articles.

1. Antimicrobial
2. Antimicrobial resistance
3. Antiseptic
   1. Alcohols (medicine)

This section contains 14 articles.

1. Antibiotic (Level 3)
2. Amoxicillin
3. Ampicillin
4. Azithromycin
5. Cephalosporin
   1. Cefalexin
   2. Cefazolin
6. Erythromycin
7. Neomycin/polymyxin B/bacitracin
8. Penicillin (Level 4)
9. Tetracycline antibiotics
   1. Doxycycline
   2. Tetracycline
   3. Tigecycline

This section contains 4 articles.

1. Antiviral drug
2. Aciclovir
3. Oseltamivir
4. Zidovudine

This section contains 3 articles.

1. Antifungal
2. Amphotericin B
3. Fluconazole

This section contains 5 articles.

1. Antiparasitic
2. Albendazole
3. Ivermectin
4. Nitazoxanide
5. Quinine (Level 4)

This section contains 13 articles.

1. Analgesic (Level 4)
2. Medical cannabis
3. Nonsteroidal anti-inflammatory drug
   1. Aspirin (Level 4)
   2. Ibuprofen
   3. Naproxen
4. Opioid
   1. Codeine
   2. Fentanyl
   3. Hydrocodone
   4. Methadone
   5. Oxycodone
5. Paracetamol

This section contains 18 articles.

1. Psychiatric medication
2. Antidepressant
   1. Amitriptyline
   2. Bupropion
   3. Clomipramine
   4. Selective serotonin reuptake inhibitor
   5. Fluoxetine
   6. Imipramine
   7. Sertraline
3. Anxiolytic
   1. Benzodiazepine (Level 4)
   2. Clonazepam
      1. Diazepam
4. Antipsychotic
   1. Chlorpromazine
   2. Fluphenazine
5. Mood stabilizer
   1. Lithium (medication)

This section contains 15 articles.

1. Vaccine (Level 3)
   1. Vaccine hesitancy (Level 4)
      1. Vaccines and autism
2. COVID-19 vaccine
3. DPT vaccine
4. HPV vaccine
5. Influenza vaccine
6. Malaria vaccine
7. MMR vaccine
8. Polio vaccine (Level 4)
9. Rabies vaccine
10. Smallpox vaccine (Level 4)
11. Typhoid vaccine
12. Varicella vaccine
13. Yellow fever vaccine

This section contains 13 articles.

1. Recreational drug use
2. Alcohol (drug) (Level 4)
   1. Alcohol intoxication (Level 4)
3. Cannabis (drug) (Level 4)
4. Heroin
5. MDMA
6. Opium (Level 4)
7. Phencyclidine
8. Psychedelic drug
   1. LSD
   2. Mescaline
   3. Psilocybin
9. Tobacco (Level 4)

1. Disease (Level 2)
   1. International Classification of Diseases
2. Abscess
3. Acne (Level 4)
4. Acromegaly
5. Acute (medicine)
6. Allergy (Level 3)
   1. Allergen
   2. Allergic rhinitis
   3. Anaphylaxis
   4. Food allergy
7. Alzheimer's disease (Level 4)
8. ALS
9. Anemia (Level 4)
10. Appendicitis
11. Arthritis (Level 4)
    1. Rheumatoid arthritis
    2. Osteoarthritis
12. Arthropathy
13. Asthma (Level 3)
14. Atherosclerosis
15. Autoimmune disease (Level 4)
    1. Lupus
    2. Psoriasis
    3. Vitiligo
16. Bronchitis (Level 4)
17. Cardiovascular disease (Level 3)
    1. Arteriosclerosis
    2. Congenital heart defect
    3. Coronary artery disease
    4. Hypercholesterolemia
    5. Hypertensive heart disease
    6. Myocardial infarction (Level 4)
    7. Peripheral artery disease
18. Chronic condition
    1. Atrial fibrillation
    2. Hyperthyroidism
    3. Hypothyroidism
    4. Inflammatory bowel disease
       1. Crohn's disease
       2. Ulcerative colitis
    5. Irritable bowel syndrome
    6. Chronic pain
    7. Atopic dermatitis
    8. Endometriosis
    9. Fetal alcohol spectrum disorder
    10. Myalgic encephalomyelitis/chronic fatigue syndrome
    11. Osteoporosis
19. Chronic obstructive pulmonary disease (Level 4)
    1. Emphysema
20. Cirrhosis (Level 4)
21. Dementia (Level 4)
22. Dehydration
23. Dermatitis
24. Diabetes (Level 3)
    1. Type 1 diabetes
    2. Type 2 diabetes
    3. Gestational diabetes
25. Diverticulitis
26. Dysmenorrhea
27. Epilepsy (Level 4)
28. Gallstone
29. Gout (Level 4)
30. Genetic disorder
    1. Cystic fibrosis
    2. Haemophilia
    3. Huntington's disease
    4. Sickle cell disease
31. Hypertension (Level 4)
32. Hypotension
33. Kidney failure
34. Kidney stone disease
35. Meningitis (Level 4)
36. Migraine (Level 4)
37. Multiple sclerosis (Level 4)
38. Neglected tropical diseases
39. Parkinson's disease (Level 4)
40. Periodontal disease
    1. Gingivitis
    2. Chronic periodontitis
41. Pleural effusion
42. Polycystic ovary syndrome
43. Sexual dysfunction
    1. Erectile dysfunction
44. SIDS
45. Thrombosis
46. Tooth decay (Level 4)

This section contains 6 articles.

1. Injury (Level 3)
   1. Injury in humans
2. Major trauma (Level 4)
3. Polytrauma
4. Wound (Level 4)
5. Scar

This section contains 67 articles.

1. Abrasion (medicine)
2. Aneurysm (Level 4)
3. Asphyxia
   1. Choking
   2. Drowning
4. Avulsion injury
5. Bleeding (Level 4)
   1. Internal bleeding
   2. Nosebleed
6. Blunt trauma (Level 4)
7. Bone fracture (Level 4)
   1. Hip fracture
   2. Mandibular fracture
   3. Nasal fracture
   4. Open fracture
   5. Skull fracture
8. Brain injury (Level 4)
   1. Concussion (Level 4)
9. Bruise (Level 4)
10. Burn (Level 4)
    1. Scalding
    2. Sunburn
11. Cardiac arrest (Level 4)
12. Dental trauma
    1. Dental avulsion
13. Frostbite (Level 4)
14. Heat illness
    1. Heat stroke
    2. Hyperthermia
15. Hernia
    1. Disc herniation
       1. Sciatica
16. Hypothermia (Level 4)
17. Hypoxia (medicine) (Level 4)
18. Ingrown nail
19. Joint dislocation
20. Mouth ulcer
21. Penetrating trauma
    1. Gunshot wound
    2. Stab wound
22. Respiratory failure (Level 4)
23. Scoliosis
24. Shock (circulatory) (Level 4)
    1. Cardiogenic shock
    2. Distributive shock
       1. Septic shock
    3. Hypovolemic shock
    4. Obstructive shock
25. Splinter
26. Sprain
27. Strain (injury)
    1. Repetitive strain injury
       1. Carpal tunnel syndrome
28. Stroke (Level 3)
29. Tendinopathy
    1. Tennis elbow
30. Toxic injury
    1. Asbestosis
    2. Drug overdose
    3. Poison (Level 4)
       1. Carbon monoxide poisoning
       2. Lead poisoning
       3. Mercury poisoning
       4. Mushroom poisoning (Level 4)
    4. Snakebite
    5. Toxicity (Level 4)
    6. Toxin

1. Amusia
2. Bell's palsy
3. Birth defect
4. Cerebral palsy (Level 4)
5. Color blindness (Level 4)
   1. Achromatopsia
6. Developmental coordination disorder
7. Down syndrome (Level 4)
8. Dwarfism
9. Hearing loss (Level 4)
   1. Deafness
10. Intellectual disability (Level 4)
11. Learning disability
    1. Dyslexia (Level 4)
12. Low back pain
13. Physical disability (Level 4)
14. Speech–language pathology
    1. Aphasia
    2. Muteness
    3. Speech disorder
       1. Stuttering
15. Visual impairment (Level 4)
    1. Cataract
    2. Glaucoma
    3. Refractive error
       1. Astigmatism
       2. Farsightedness
       3. Myopia
       4. Presbyopia

1. Brain tumor (Level 4)
   1. Medulloblastoma
2. Bone tumor
3. Cancer (Level 3)
   1. Metastasis
4. Carcinogen (Level 4)
5. Cervical cancer
6. Breast cancer (Level 4)
7. Colorectal cancer (Level 4)
8. Head and neck cancer
9. Leukemia (Level 4)
10. Liver cancer
11. Lung cancer (Level 4)
12. Lymphoma (Level 4)
    1. Hodgkin lymphoma
13. Mesothelioma
14. Neoplasm (Level 4)
15. Ovarian cancer
16. Pancreatic cancer
17. Penile cancer
18. Prostate cancer (Level 4)
19. Sarcoma
20. Skin cancer (Level 4)
    1. Melanoma (Level 4)
21. Stomach cancer
22. Testicular cancer

This section contains 37 articles.

1. Infection (Level 3)
   1. Bloodstream infection
   2. Respiratory tract infection
   3. Opportunistic infection
   4. Skin infection
   5. Urinary tract infection
2. Pathogen (Level 4)
   1. Fungal infection (Level 4)
   2. Parasitic disease
      1. Helminthiasis
   3. Pathogenic bacteria
   4. Virus (Level 3)
      1. Introduction to viruses
      2. Viral disease
      3. Virus latency
   5. Prion (Level 4)
3. Epidemic
   1. Pandemic
4. Immunity (medicine)
   1. Immunization
   2. Inoculation
5. Otitis
   1. Otitis externa
   2. Otitis media
6. Pathogen transmission
   1. Airborne transmission
   2. Disease vector
      1. Zoonosis
         1. Mosquito-borne disease
         2. Tick-borne disease
      2. Reverse zoonosis
   3. Foodborne illness (Level 4)
   4. Natural reservoir
   5. Sexually transmitted infection (Level 3)
   6. Waterborne disease
      1. Fecal–oral route
7. Immunodeficiency

This section contains 125 articles.

1. Conjunctivitis
2. Encephalitis (Level 4)
3. Gangrene (Level 4)
4. Gastroenteritis (Level 3)
   1. Dysentery (Level 4)
5. Keratitis
6. Naegleriasis
7. Pelvic inflammatory disease
8. Pneumonia (Level 3)

This section contains 27 articles.

1. Anthrax (Level 4)
2. Brucellosis
3. Botulism (Level 4)
4. Chlamydia (Level 4)
5. Cholera (Level 4)
6. Diphtheria (Level 4)
7. Erysipelas
8. Gonorrhea (Level 4)
9. Glanders
10. Impetigo
11. Legionnaires' disease
12. Leprosy (Level 4)
13. Leptospirosis
14. Lyme disease (Level 4)
15. Pathogenic Escherichia coli
16. Plague (disease)
    1. Bubonic plague (Level 4)
17. Streptococcal pharyngitis
    1. Rheumatic fever
18. Scarlet fever (Level 4)
19. Staphylococcal infection
20. Syphilis (Level 4)
21. Tetanus (Level 4)
22. Tuberculosis (Level 3)
23. Typhoid fever (Level 4)
24. Typhus (Level 4)
25. Whooping cough (Level 4)

This section contains 49 articles.

1. Chickenpox (Level 4)
   1. Shingles
2. Chikungunya
3. Classical swine fever
4. Common cold (Level 3)
5. COVID-19
6. Cowpox
7. Croup
8. Dengue fever (Level 4)
9. Ebola (Level 4)
10. Hand, foot, and mouth disease (Level 4)
11. Hepatitis (Level 4)
    1. Hepatitis A
    2. Hepatitis B
    3. Hepatitis C
    4. Hepatitis D
    5. Hepatitis E
12. Herpes (Level 4)
    1. Genital herpes
    2. Cold sore
    3. Herpes gladiatorum
    4. Herpes simplex encephalitis
    5. Herpes meningitis
    6. Herpes esophagitis
    7. Neonatal herpes
    8. Eczema herpeticum
    9. Herpes simplex keratitis
    10. Herpetic gingivostomatitis
    11. Herpetic whitlow
13. HIV/AIDS (Level 3)
14. Human papillomavirus infection (Level 4)
15. Infectious mononucleosis
16. Influenza (Level 3)
    1. Avian influenza
17. Japanese encephalitis
18. Measles (Level 4)
19. Mpox
20. Mumps (Level 4)
21. Nipah virus infection
22. Polio (Level 4)
23. Rabies (Level 4)
24. Rift Valley fever
25. Rinderpest
26. Rubella
27. SARS (Level 4)
28. Smallpox (Level 3)
29. West Nile fever (Level 4)
30. Yellow fever (Level 4)
31. Zika fever

This section contains 14 articles.

1. African swine fever virus
2. Coronavirus (Level 4)
3. Hepatitis C virus
4. Herpesviridae
   1. Epstein–Barr virus
   2. Herpes simplex virus
   3. Varicella zoster virus
5. HIV
6. Influenza A virus
7. Influenza B virus
8. Norovirus
9. Orthomyxoviridae
10. SARS-CoV-2 (Level 4)
11. Tobacco mosaic virus (Level 4)

This section contains 4 articles.

1. Athlete's foot
2. Candidiasis
3. Dermatophytosis
4. Onychomycosis

This section contains 18 articles.

1. African trypanosomiasis
2. Amoebiasis
3. Ascariasis
4. Cysticercosis
5. Chagas disease
6. Dracunculiasis
7. Giardiasis
8. Infestation
   1. Head lice infestation
   2. Myiasis
   3. Scabies (Level 4)
9. Leishmaniasis
10. Malaria (Level 3)
11. Onchocerciasis
12. Schistosomiasis
13. Taeniasis
14. Toxocariasis
15. Toxoplasmosis

This section contains 4 articles.

1. Transmissible spongiform encephalopathy
   1. Bovine spongiform encephalopathy
   2. Creutzfeldt–Jakob disease
   3. Variant Creutzfeldt–Jakob disease

1. Mental disorder (Level 3)
   1. Developmental disorder
2. Anxiety disorder (Level 4)
   1. Phobia (Level 4)
   2. Post-traumatic stress disorder (Level 4)
   3. Generalized anxiety disorder
   4. Social anxiety disorder
   5. Hypochondriasis
   6. Complex post-traumatic stress disorder
3. Attention deficit hyperactivity disorder (Level 4)
4. Autism (Level 4)
   1. Asperger syndrome
   2. High-functioning autism
5. Dissociative disorders
   1. Dissociative identity disorder
   2. Dissociative amnesia
   3. Depersonalization-derealization disorder
6. Catatonia
7. Conduct disorder
8. Eating disorder (Level 4)
   1. Anorexia nervosa
   2. Bulimia nervosa
   3. Pica (disorder)
   4. Body image disturbance
9. Hoarding disorder
10. Kleptomania
11. Mass psychogenic illness
12. Mood disorder
    1. Bipolar disorder (Level 4)
       1. Bipolar I disorder
       2. Bipolar II disorder
    2. Dysthymia
    3. Major depressive disorder (Level 4)
    4. Postpartum depression
    5. Seasonal affective disorder
13. Obsessive–compulsive disorder
    1. Body dysmorphic disorder
14. Oppositional defiant disorder
15. Paranoia
16. Pedophilia (Level 4)
17. Personality disorder (Level 4)
    1. Antisocial personality disorder
    2. Avoidant personality disorder
    3. Borderline personality disorder
    4. Dependent personality disorder
    5. Depressive personality disorder
    6. Histrionic personality disorder
    7. Narcissistic personality disorder
    8. Obsessive–compulsive personality disorder
    9. Paranoid personality disorder
    10. Psychopathy (Level 4)
    11. Schizoid personality disorder
    12. Schizotypal personality disorder
18. Pyromania
19. Schizophrenia (Level 4)
20. Sleep disorder
    1. Bruxism
    2. Insomnia
    3. Jet lag
    4. Narcolepsy
    5. Sleep apnea
    6. Sleepwalking
21. Somatic symptom disorder
22. Suicide crisis
    1. Suicide intervention
    2. Suicide methods
    3. Suicide prevention
23. Tourette syndrome

This section contains 2 articles.

1. Hysteria
2. Neurosis (Level 4)

1. Signs and symptoms
2. Syndrome (Level 4)
3. Abdominal pain
4. Ageusia
   1. Dysgeusia
   2. Hypogeusia
5. Amenorrhea
6. Anosmia
   1. Hyposmia
7. Ataxia
8. Aura (symptom)
9. Blurred vision
10. Comedo
    1. Pimple
11. Constipation
12. Cough
13. Cramp
14. Cyanosis
15. Diarrhea (Level 4)
16. Dizziness
    1. Vertigo
    2. Lightheadedness
    3. Balance disorder
17. Fatigue
18. Fever
19. Goose bumps
20. Headache
21. Heartburn
22. Heart failure
23. Heart rate
    1. Bradycardia
    2. Tachycardia
24. Hives
25. Hypoesthesia
26. Inflammation (Level 4)
27. Itch
28. Jaundice
29. Myalgia
30. Myoclonus
    1. Hiccup
31. Nausea
32. Nevus
33. Phonophobia
34. Photophobia
35. Psychosis (Level 4)
    1. Delusion (Level 4)
    2. Hallucination (Level 4)
36. Rash
37. Rhinorrhea
    1. Post-nasal drip
38. Seizure
39. Sepsis
40. Shivering
41. Sleep deprivation
42. Sneeze
43. Sore throat
44. Syncope (medicine)
45. Tinnitus
46. Toothache (Level 4)
47. Vomiting
48. Wart

1. Health (Level 3)
   1. Mental health (Level 3)
   2. Men's health
   3. Women's health
2. Ageing (Level 3)
   1. Frailty syndrome
   2. Gerontology
3. Human hair color
4. Hair loss
   1. Alopecia areata
   2. Pattern hair loss
   3. Telogen effluvium
5. Breastfeeding (Level 4)
   1. Breast milk
   2. Extended breastfeeding
   3. Human–animal breastfeeding
   4. Wet nurse
6. Fertilisation (Level 4)
   1. Infertility (Level 4)
   2. In vitro fertilisation
7. Nutrition (Level 3)
   1. Diet (nutrition) (Level 4)
   2. Dietary supplement (Level 4)
   3. Food group (Level 4)
   4. Healthy diet
   5. Human nutrition
   6. Hunger (Level 4)
   7. Lactose intolerance
   8. Malnutrition (Level 4)
      1. Thiamine deficiency
      2. Pellagra
      3. Rickets
      4. Scurvy
      5. Stunted growth
   9. Vitamin (Level 4)
8. Occupational safety and health (Level 4)
   1. Hazard
   2. Personal protective equipment (Level 4)
9. Psychological trauma
10. Quality of life
11. Substance use disorder (Level 4)
    1. Addiction (Level 3)
    2. Alcoholism (Level 3)
    3. Substance dependence (Level 4)
    4. Substance abuse
12. Smoking (Level 3)
    1. Cigar
    2. Cigarette (Level 4)
    3. Electronic cigarette
    4. Passive smoking
    5. Smoking pipe
13. Stress (biology) (Level 4)

1. Physical fitness (Level 4)
2. Body mass index (Level 4)
3. Exercise (Level 3)
   1. Aerobic exercise
   2. Anaerobic exercise
   3. Aerobics
   4. Calisthenics
      1. Pull-up (exercise)
      2. Push-up
      3. Sit-up
   5. High-intensity interval training
   6. Pilates
   7. Strength training
   8. Stretching
   9. Yoga as exercise
4. Physical activity
5. Weight loss (Level 4)

1. Vitamin A
2. Vitamin C
3. Vitamin D
4. Vitamin E
5. Vitamin K
6. B vitamins
   1. Thiamine
   2. Riboflavin
   3. Vitamin B3
      1. Niacin
   4. Pantothenic acid
   5. Vitamin B6
      1. Pyridoxine
   6. Biotin
   7. Folate
   8. Vitamin B12

This section contains 13 articles.

1. Hygiene (Level 3)
   1. Anal hygiene
   2. Bathing (Level 4)
   3. Body odor
   4. Feminine hygiene (Level 4)
   5. Hair care
   6. Hand washing
   7. Oral hygiene (Level 4)
      1. Dental plaque
   8. Skin care
2. Grooming
3. Hair removal
   1. Shaving (Level 4)

This section contains 27 articles.

1. Comb
2. Dental floss
3. Deodorant
4. Facial tissue
5. Hairbrush
6. Hair conditioner
7. Hand sanitizer
8. Lip balm
9. Menstrual cup
10. Menstrual pad
11. Moisturizer
12. Mouthwash
13. Napkin
14. Safety razor
15. Shampoo
16. Shaving cream
17. Shower gel
18. Straight razor
19. Sunscreen
20. Tampon
21. Toilet paper
22. Toothbrush
23. Toothpaste
24. Toothpick
25. Towel
    1. Paper towel
26. Wet wipe