D
- Dandruff
- Daytime sleepiness
- DCIS
- DDH
- De Quervain tenosynovitis
- Decreased tear production
- Deep vein thrombosis (DVT)
- Deficient color vision
- Degenerative arthritis
- Dehydration
- Delayed ejaculation
- Delayed gastric emptying
- Delayed sleep phase
- Delayed sleep phase syndrome
- Delayed sleep-wake phase sleep disorder
- Delirium
- Dementia
- Dementia, frontotemporal
- Dementia, Lewy body
- Dementia, vascular
- Dengue fever
- Dengue hemorrhagic fever
- Dependence, nicotine
- Depersonalization-derealization disorder
- Depression (major depressive disorder)
- Depression, postpartum
- Depression, teen
- Dermatitis
- Dermatitis, atopic
- Dermatitis, cercarial
- Dermatitis, contact
- Dermatitis, scratch
- Dermatitis, seborrheic
- Dermatofibrosarcoma protuberans
- Dermatographia (Dermatographism)
- Dermatographism
- Dermatomyositis
- Dermatophytosis
- Desmoid tumors
- Desmoplastic small round cell tumors
- Detached retina
- Developmental dysplasia of the hip
- Deviated septum
- Devic’s disease
- DFSP
- Diabetes
- Diabetes insipidus
- Diabetes mellitus
- Diabetes, gestational
- Diabetes, type 1
- Diabetes, type 1 in children
- Diabetes, type 2
- Diabetes, type 2 in children
- Diabetic coma
- Diabetic hypoglycemia
- Diabetic ketoacidosis
- Diabetic nephropathy (kidney disease)
- Diabetic neuropathy
- Diabetic retinopathy
- Diaper rash
- Diarrhea
- Diarrhea, antibiotic-associated
- Diarrhea, traveler’s
- Difficulty speaking
- Difficulty swallowing
- Diffuse large B-cell lymphoma
- Diffuse midline glioma (DMG)
- DiGeorge syndrome (22q11.2 deletion syndrome)
- Dilated cardiomyopathy
- Diphtheria
- Dislocated shoulder
- Dissecting aneurysm
- Dissociative disorders
- Diverticulitis
- Dizziness
- DMG
- Double uterus
- Double-outlet right ventricle
- Down syndrome
- Dressler syndrome
- Drop foot
- Drug addiction (substance use disorder)
- Drug allergy
- Dry age-related macular degeneration
- Dry AMD
- Dry eyes
- Dry macular degeneration
- Dry mouth
- Dry skin
- Dry socket
- DSPS
- DSRCT
- DSWPD
- Ductal carcinoma in situ (DCIS)
- Dumping syndrome
- Dunbar syndrome
- Dupuytren contracture
- Dural arteriovenous fistulas
- Dust mite allergy
- DVT
- Dwarfism
- Dysarthria
- Dyshidrosis
- Dyslexia
- Dysmenorrhea
- Dyspareunia
- Dyspepsia
- Dysphagia
- Dysphonia
- Dysrhythmias
- Dysthymia
- Dystonia
- Dystonia, cervical