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. Personal protective equipment
11. Search and rescue
12. Triage
13. White coat

Health professionals

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

Health facilities

This section contains 12 articles.

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

Medical procedures: General

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)

Diagnostics

This section contains 29 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. Eye examination ( Level 4)
9. Lumbar puncture ( Level 4)
10. Palpation
11. Pap test ( Level 4)
12. Percussion (medicine)
13. Reflex ( Level 4)
14. Telehealth
15. Urine test
    1. Drug test
    2. Pregnancy test
16. Vital signs
    1. Blood pressure ( Level 4)
    2. Human body temperature
    3. Pulse ( Level 4)
    4. Respiratory rate

Treatments

This section contains 53 articles.

1. Orthopedic cast
2. Blood transfusion ( Level 4)
3. Boot (medicine)
4. Cardiopulmonary resuscitation
5. Catheter
6. Cauterization
7. Cervical collar
8. Crutch
9. Cure
10. Dressing (medicine)
11. Defibrillation
12. Mouth-to-mouth resuscitation
13. Oxygen therapy
14. Speculum (medicine)
15. Symptomatic treatment ( Level 4)
16. Tracheal intubation

Dental treatments

This section contains 8 articles.

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

Surgery

This section contains 16 articles.

1. Surgery ( Level 3)
2. Amputation ( Level 4)
3. Angioplasty
4. Caesarean section
5. Debridement
6. Forceps
7. Incision and drainage
8. LASIK
9. Neurosurgery
10. Organ transplantation ( Level 4)
11. Plastic surgery ( Level 4)
12. Reduction (orthopedic surgery)
13. Retractor (medicine)
14. Scalpel
15. Surgical suture
16. Tweezers

Therapy

This section contains 13 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
13. Speech–language pathology

1. Human body ( Level 3)
   1. Human variability
2. Blood type ( Level 4)
   1. ABO blood group system
   2. Rh blood group system
3. 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
4. Human digestive system
   1. Gastrointestinal tract ( Level 4)
5. Human musculoskeletal system
   1. Human back
      1. Latissimus dorsi muscle
   2. Human skeleton ( Level 4)
   3. Shoulder
      1. Deltoid muscle
   4. Pectoralis major
   5. Rectus abdominis muscle
6. Human skin
7. Human voice ( Level 4)
8. 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
9. Hip
   1. Gluteus maximus
10. Human reproductive system
    1. Female ejaculation
       1. G-spot
    2. Human penis
    3. Vulva
       1. Labia
11. Human anus
    1. Hemorrhoid
12. 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. Nephrology
24. Neurology ( Level 4)
25. Nuclear medicine
26. Occupational medicine
27. Oncology ( Level 4)
28. Ophthalmology ( Level 4)
29. Optometry ( Level 4)
30. Orthopedic surgery
31. Orthotics
32. Otorhinolaryngology ( Level 4)
33. Pathology
34. Pediatrics ( Level 4)
    1. Neonatology
35. Pharmacology ( Level 4)
    1. Pharmacodynamics
    2. Pharmacokinetics ( Level 4)
    3. Prescription drug ( Level 4)
36. Podiatry
37. Psychiatry ( Level 4)
38. Public health ( Level 4)
    1. Epidemiology ( Level 4)
    2. Health education
    3. Preventive healthcare ( Level 4)
39. Pulmonology ( Level 4)
40. Radiology ( Level 4)
41. Reproductive medicine
    1. Andrology
    2. Obstetrics and gynaecology ( Level 4)
       1. Obstetrics
       2. Gynaecology
    3. Sexual and reproductive health ( Level 4)
42. Rheumatology
43. Sports medicine
44. Toxicology ( Level 4)
45. Traditional medicine ( Level 4)
    1. Ayurveda ( Level 4)
    2. Traditional Chinese medicine ( Level 4)
       1. Acupuncture ( Level 4)
       2. Chinese herbology
       3. Tui na
46. Traumatology
47. Urology ( Level 4)
48. Vaccination ( Level 4)
49. Veterinary medicine ( Level 4)

This section contains 30 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. Psychiatric medication
   1. Antidepressant
   2. Anxiolytic
   3. Antipsychotic
   4. Mood stabilizer
8. Psychoactive drug
9. 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
10. Drug discovery
11. Side effect
12. WHO Model List of Essential Medicines

This section contains 108 articles.

1. Amphetamine ( Level 4)
2. Benzodiazepine ( Level 4)
   1. Diazepam
3. Bronchodilator
   1. Salmeterol
   2. Salbutamol
4. Calamine
5. Chlorpromazine
6. Epinephrine (medication)
7. Fluoxetine
8. Heparin
9. Hydrocortisone
10. Imipramine
11. Insulin (medication)
12. Loperamide
13. Propranolol
14. Sertraline
15. Sildenafil
16. Warfarin

Anesthetics

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

Antihistamines

This section contains 6 articles.

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

Anti-infectives

This section contains 29 articles.

1. Antimicrobial
2. Antimicrobial resistance
3. Antiseptic

Antibiotics

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

Antiviral drugs

This section contains 4 articles.

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

Antifungals

This section contains 3 articles.

1. Antifungal
2. Amphotericin B
3. Fluconazole

Antiparasitic

This section contains 5 articles.

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

Pain treatments

This section contains 11 articles.

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

Vaccines

This section contains 15 articles.

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

Recreational drugs

This section contains 14 articles.

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

1. Disease ( Level 2)
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
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. Diabetes ( Level 3)
    1. Type 1 diabetes
    2. Type 2 diabetes
    3. Gestational diabetes
24. Epilepsy ( Level 4)
25. Gallstone
26. Gout ( Level 4)
27. Genetic disorder
    1. Cystic fibrosis
    2. Haemophilia
    3. Huntington's disease
    4. Sickle cell disease
28. Hypertension ( Level 4)
29. Hypotension
30. Kidney failure
31. Kidney stone disease
32. Meningitis ( Level 4)
33. Migraine ( Level 4)
34. Multiple sclerosis ( Level 4)
35. Neglected tropical diseases
36. Parkinson's disease ( Level 4)
37. Periodontal disease
    1. Gingivitis
    2. Chronic periodontitis
38. Pleural effusion
39. Sexual dysfunction
    1. Erectile dysfunction
40. SIDS
41. Thrombosis
42. Tooth decay ( Level 4)

Injury: General

This section contains 4 articles.

1. Injury ( Level 3)
2. Major trauma ( Level 4)
3. Polytrauma
4. Wound ( Level 4)

Types

This section contains 65 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
   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. Spinal disc herniation
       1. Sciatica
16. Hypothermia ( Level 4)
17. Hypoxia (medicine) ( Level 4)
18. Joint dislocation
19. Penetrating trauma
    1. Gunshot wound
    2. Stab wound
20. Respiratory failure ( Level 4)
21. Scoliosis
22. Shock (circulatory) ( Level 4)
    1. Cardiogenic shock
    2. Distributive shock
       1. Septic shock
    3. Hypovolemic shock
    4. Obstructive shock
23. Splinter
24. Sprain
25. Strain (injury)
    1. Repetitive strain injury
       1. Carpal tunnel syndrome
26. Stroke ( Level 3)
27. Tendinopathy
    1. Tennis elbow
28. 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. Cerebral palsy ( Level 4)
4. Color blindness ( Level 4)
   1. Achromatopsia
5. Developmental coordination disorder
6. Down syndrome ( Level 4)
7. Dwarfism
8. Hearing loss ( Level 4)
   1. Deafness
9. Intellectual disability ( Level 4)
10. Learning disability
    1. Dyslexia ( Level 4)
11. Low back pain
12. Physical disability ( Level 4)
13. Speech disorder
    1. Aphasia
    2. Muteness
    3. Stuttering
14. 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. Pancreatic cancer
16. Penile cancer
17. Prostate cancer ( Level 4)
18. Sarcoma
19. Skin cancer ( Level 4)
    1. Melanoma ( Level 4)
20. Stomach cancer
21. Testicular cancer

Concepts

This section contains 35 articles.

1. Infection ( Level 3)
   1. Bloodstream infections
   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)
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

Specific infectious diseases

This section contains 122 articles.

1. Amoebiasis
2. Conjunctivitis
3. Encephalitis ( Level 4)
4. Gangrene ( Level 4)
5. Gastroenteritis ( Level 3)
   1. Dysentery ( Level 4)
6. Naegleriasis
7. Pneumonia ( Level 3)

Bacterial infections

This section contains 28 articles.

1. Anthrax ( Level 4)
2. Brucellosis
3. Botulism ( Level 4)
4. Chlamydia ( Level 4)
5. Cholera ( Level 4)
   1. History of cholera
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)

Viral diseases

This section contains 48 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. Mumps ( Level 4)
20. Nipah virus infection
21. Polio ( Level 4)
22. Rabies ( Level 4)
23. Rift Valley fever
24. Rinderpest
25. Rubella
26. SARS ( Level 4)
27. Smallpox ( Level 3)
28. West Nile fever ( Level 4)
29. Yellow fever ( Level 4)
30. Zika fever

Specific viruses

This section contains 13 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 ( Level 4)
6. Influenza A virus
7. Influenza B virus
8. Norovirus
9. Orthomyxoviridae
10. Tobacco mosaic virus ( Level 4)

Fungal infections

This section contains 4 articles.

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

Parasitic infections

This section contains 17 articles.

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

Prion diseases

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 spectrum ( 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. Kleptomania
10. Mass psychogenic illness
11. 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
12. Obsessive–compulsive disorder
    1. Body dysmorphic disorder
13. Oppositional defiant disorder
14. Paranoia
15. Pedophilia ( Level 4)
16. 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
17. Pyromania
18. Schizophrenia ( Level 4)
19. Sleep disorder
    1. Bruxism
    2. Insomnia
    3. Jet lag
    4. Narcolepsy
    5. Sleep apnea
    6. Sleepwalking
20. Somatic symptom disorder
21. Tourette syndrome

Outdated disorders

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

1. Health ( Level 3)
   1. Mental health ( Level 3)
   2. Men's health
   3. Women's health
2. Physical fitness ( Level 4)
   1. Body mass index
   2. Exercise ( Level 3)
      1. Aerobic exercise
      2. Anaerobic exercise
      3. Stretching
   3. Obesity ( Level 3)
   4. Weight loss ( Level 4)
3. Ageing ( Level 3)
   1. Gerontology
4. Frailty syndrome
5. Human hair color
6. Hair loss
   1. Alopecia areata
   2. Pattern hair loss
   3. Telogen effluvium
7. Wrinkle
8. Breastfeeding ( Level 4)
   1. Breast milk
   2. Extended breastfeeding
   3. Human–animal breastfeeding
   4. Wet nurse
9. Fertilisation ( Level 4)
   1. Infertility ( Level 4)
10. Nutrition ( Level 3)
    1. Diet (nutrition) ( Level 4)
    2. Dietary supplement ( Level 4)
    3. Food group ( Level 4)
    4. Healthy diet
    5. High-fructose corn syrup
    6. Human nutrition
    7. Hunger ( Level 4)
    8. Lactose intolerance
    9. Malnutrition ( Level 4)
       1. Thiamine deficiency
       2. Pellagra
       3. Rickets
       4. Scurvy
       5. Stunted growth
    10. Vitamin ( Level 4)
11. Occupational safety and health ( Level 4)
12. Substance use disorder ( Level 4)
    1. Addiction ( Level 3)
    2. Alcoholism ( Level 3)
    3. Substance dependence ( Level 4)
    4. Substance abuse
13. Smoking ( Level 3)
    1. Cigar
    2. Cigarette ( Level 4)
    3. Electronic cigarette
    4. Smoking pipe
14. Stress (biology) ( 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

Hygiene and grooming: General

This section contains 12 articles.

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

Hygiene products

This section contains 28 articles.

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