- Dissecting cellulitis of the scalp
- Dissection
- Dissector
- Disseminated cancer
- Disseminated coccidioidomycosis
- Disseminated disease
- Disseminated herpes zoster
- Disseminated superficial actinic porokeratosis
- Dissociated sensory loss
- Dissociated vertical deviation
- Dissociation
- Dissociation constant
- Dissociation rate
- Dissociative Experiences Scale
- Dissociative amnesia
- Dissociative disorder
- Dissociative disorders
- Dissociative fugue
- Dissolution
- Dissolution testing
- Dissolved inorganic carbon
- Dissolved oxygen
- Distal convoluted tubule
- Distal hereditary motor neuropathies
- Distal intestinal obstruction syndrome
- Distal myopathy
- Distal pancreatectomy
- Distal promoter
- Distal radioulnar joint
- Distal radius
- Distal radius fracture
- Distal renal tubular acidosis
- Distal subungual onychomycosis
- Distal tibia
- Distance correlation
- Distance matrix
- Distancing
- Distant metastasis
- Distensibility
- Distichiasis
- Distillation
- Distillation apparatus
- Distilled water
- Distracted driving
- Distractibility
- Distraction osteogenesis
- Distress
- Distress tolerance
- Distribution coefficient
- Distribution constant
- Distribution half-life
- Distributive justice
- Distributive shock
- Disuccinimidyl suberate
- Disulfide
- Disulfide bonds
- Disulfiram
- Disulfiram-alcohol reaction
- Disulfoton
- Diterpene alkaloids
- Diterpenes
- Diterpenoids
- Dithiocarbamate
- Dithioerythritol
- Dithiol
- Dithiolane
- Dithranol
- Dithymoquinone
- Ditran
- Dityrosine
- Diuresis
- Diuretics
- Diurnal animal
- Diurnal enuresis
- Diurnal mood variation
- Diurnal rhythm
- Diuron
- Divergent evolution
- Divergent strabismus
- Diversion colitis
- Diversity of species
- Diverticular disease
- Diverticulitis
- Diverticulosis
- Diverticulum
- Divided consciousness
- Diving bell
- Diving reflex
- Divinylbenzene
- Dix-Hallpike test
- Dixyrazine
- Dizocilpine
- Dizocilpine maleate
- Dizygotic twins
- Dizziness
- DnaG
- DnaS
- Do not resuscitate
- Doan's
- Docetaxel
- Docking protein
- Docosahexaenoic acid
- Docosanol
- Docosapentaenoic acid
- Doctor shopping
- Doctor-patient relationship
- Doctors of Osteopathic Medicine
- Docusate sodium
- Dodecaborate
- Dodecanal
- Dodecylbenzene
- Dodo bird verdict
- Doege-Potter syndrome
- Dohle bodies
- Dolasetron
- Dolichocephaly
- Dolichol
- Dolichol phosphate
- Dolichostenomelia
- Dolomite
- Dolorimeter
- Dolutegravir
- Domains of unknown function
- Domestic violence
- Dominant gene
- Dominant inheritance
- Dominant response
- Domoic acid
- Domperidone
- Donepezil
- Donnan potential
- Donohue syndrome
- Donor lymphocyte infusion
- Donor-specific antibody
- Door to balloon
- Door-to-balloon
- Dopa
- Dopa decarboxylase inhibitors
- Dopachrome
- Dopamine
- Dopamine agonists
- Dopamine antagonists
- Dopamine beta hydroxylase
- Dopamine dysregulation syndrome
- Dopamine hypothesis
- Dopamine hypothesis of schizophrenia
- Dopamine receptor
- Dopamine receptor D1
- Dopamine receptor D2
- Dopamine reuptake inhibitors