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Internal Medicine Alphabet-D

S. No	Initialism	Full Form	Short Explanation	Practical Example
D001	D1	Dopamine Receptor 1	Dopamine receptor subtype important in neurology.	Antipsychotic blocks D1 receptors.
D002	D2	Dopamine Receptor 2	Key dopamine receptor targeted in schizophrenia.	Risperidone acts on D2 receptors.
D003	D3	Dopamine Receptor 3	Limbic system dopamine receptor.	D3 receptor studied in addiction.
D004	D4	Dopamine Receptor 4	Dopamine receptor subtype in frontal cortex.	Clozapine affects D4 receptors.
D005	D5	Dopamine Receptor 5	Dopamine receptor associated with cognition.	Research links D5 to memory.
D006	D&C	Dilation and Curettage	Gynecological procedure to remove uterine contents.	D&C done after miscarriage.
D007	D-Dimer	D-Dimer Test	Lab test to rule out thrombosis.	Elevated D-dimer in DVT.
D008	DKA	Diabetic Ketoacidosis	Life-threatening diabetes complication.	Patient admitted with DKA.
D009	DM	Diabetes Mellitus	Chronic metabolic disorder with hyperglycemia.	Patient treated for DM type 2.
D010	DMT2	Diabetes Mellitus Type 2	Common form of diabetes due to insulin resistance.	Metformin prescribed in DMT2.
D011	DMT1	Diabetes Mellitus Type 1	Autoimmune diabetes requiring insulin.	Adolescent diagnosed with DMT1.
D012	DRE	Digital Rectal Exam	Manual exam of prostate and rectum.	DRE performed for prostate screening.
D013	DVT	Deep Vein Thrombosis	Blood clot in deep veins, usually legs.	Doppler confirmed DVT.
D014	DIC	Disseminated Intravascular Coagulation	Abnormal clotting and bleeding disorder.	Sepsis patient developed DIC.
D015	DNA	Deoxyribonucleic Acid	Genetic material of living organisms.	DNA test used for genetic diagnosis.
D016	DNMT	DNA Methyltransferase	Enzyme involved in epigenetic modification.	DNMT studied in cancer research.
D017	DNR	Do Not Resuscitate	Medical order against CPR in terminal illness.	Patient’s chart marked DNR.
D018	DEXA	Dual-Energy X-ray Absorptiometry	Imaging test for bone density.	DEXA scan showed osteoporosis.
D019	DR	Diabetic Retinopathy	Retinal damage from diabetes.	DR screening done annually.
D020	DMARD	Disease-Modifying Antirheumatic Drug	Drugs that slow RA progression.	Methotrexate is a DMARD.
D021	DLBCL	Diffuse Large B-Cell Lymphoma	Aggressive type of non-Hodgkin lymphoma.	Biopsy confirmed DLBCL.
D022	DLB	Dementia with Lewy Bodies	Neurodegenerative dementia type.	Patient diagnosed with DLB.
D023	DMD	Duchenne Muscular Dystrophy	Genetic muscle-wasting disorder.	Boy diagnosed with DMD.
D024	DMI	Diastolic Myocardial Dysfunction	Impaired diastolic heart function.	Echo showed DMI changes.
D025	DME	Diabetic Macular Edema	Vision loss complication of diabetes.	DME treated with anti-VEGF injections.
D026	DMEK	Descemet Membrane Endothelial Keratoplasty	Corneal transplant technique.	DMEK performed for endothelial dystrophy.
D027	DSA	Digital Subtraction Angiography	Imaging for blood vessels.	DSA done for aneurysm detection.
D028	DSE	Dobutamine Stress Echocardiography	Echo test for CAD using dobutamine.	DSE performed for chest pain evaluation.
D029	DSD	Disorder of Sexual Development	Congenital condition affecting sexual differentiation.	Patient evaluated for DSD.
D030	DSL	Diffuse Scleroderma	Systemic autoimmune disorder.	DSL diagnosed with skin thickening.
D031	DSPS	Delayed Sleep Phase Syndrome	Circadian rhythm disorder.	DSPS treated with melatonin.
D032	DSWI	Deep Sternal Wound Infection	Post-cardiac surgery infection.	Antibiotics started for DSWI.
D033	DT	Delirium Tremens	Severe alcohol withdrawal syndrome.	ICU admitted patient with DT.
D034	DTP	Diphtheria, Tetanus, Pertussis Vaccine	Childhood immunization.	Child received DTP booster.
D035	DTPA	Diethylenetriaminepentaacetic Acid	Chelating agent used in poisoning.	DTPA used for heavy metal toxicity.
D036	DU	Duodenal Ulcer	Peptic ulcer in the duodenum.	Endoscopy confirmed DU.
D037	DUH	Disseminated Urticarial Hypersensitivity	Widespread allergic reaction.	DUH after drug exposure.
D038	DUI	Drug Use Induced	Condition caused by medications.	Liver injury due to DUI acetaminophen.
D039	DUM	Drug Utilization Monitoring	Clinical pharmacology monitoring.	DUM implemented in hospital.
D040	DVT-P	Deep Vein Thrombosis Prophylaxis	Preventive measures for DVT.	Heparin used as DVT-P in surgery.
D041	DW	Dry Weight	Patient’s weight without fluid overload.	DW assessed in dialysis patients.
D042	DX	Diagnosis	Clinical conclusion after assessment.	Final DX: pneumonia.
D043	DXA	Dual X-ray Absorptiometry	Same as DEXA scan for bone density.	DXA showed osteopenia.
D044	DXM	Dextromethorphan	Cough suppressant.	Patient used DXM for cough.
D045	DXT	Deep X-ray Therapy	Radiation therapy for cancers.	DXT administered for skin carcinoma.
D046	DYS	Dysplasia	Abnormal growth of cells/tissues.	Pap smear showed cervical DYS.
D047	DZ	Disease	Medical condition affecting the body.	CAD is a chronic DZ.
D048	DZC	Dizygotic Twins	Non-identical twin pregnancy.	Ultrasound showed DZC.
D049	DZM	Diazepam	Benzodiazepine drug for anxiety and seizures.	ER gave IV DZM.
D050	DZO	Dizziness Onset	Clinical symptom onset timing.	Chart noted DZO 3 days ago.

(D051–D200)

S. No	Initialism	Full Form	Short Explanation	Practical Example
D051	D1C	Vitamin D1 Complex	Early form of vitamin D compound.	Patient studied with D1C supplementation.
D052	D2T	Difficult-to-Treat	Used for refractory diseases.	RA classified as D2T.
D053	D4T	Stavudine	Antiretroviral drug for HIV.	D4T discontinued due to toxicity.
D054	DA	Dopamine	Neurotransmitter and hormone.	Low DA levels in Parkinson’s.
D055	DAB	Dabigatran	Direct oral anticoagulant.	Patient started on DAB for AF.
D056	DAC	Dose Adjustment for Creatinine	Dosage change based on renal function.	Antibiotic given with DAC.
D057	DAD	Diffuse Alveolar Damage	Pathological hallmark of ARDS.	Autopsy showed DAD.
D058	DAE	Drug-Associated Eosinophilia	Increased eosinophils due to drugs.	DAE after antibiotic therapy.
D059	DAF	Decay-Accelerating Factor	Complement regulator protein.	PNH linked with DAF deficiency.
D060	DAG	Diacylglycerol	Lipid signaling molecule.	DAG elevated in metabolic syndrome.
D061	DAH	Diffuse Alveolar Hemorrhage	Pulmonary bleeding syndrome.	DAH seen in vasculitis.
D062	DALY	Disability-Adjusted Life Year	Global burden of disease measure.	WHO reports DALYs lost to TB.
D063	DAMA	Discharge Against Medical Advice	Patient leaves hospital without approval.	Chart marked as DAMA.
D064	DAN	Diabetic Autonomic Neuropathy	Nerve damage in diabetes.	DAN causing postural hypotension.
D065	DAO	Diamine Oxidase	Enzyme breaking down histamine.	DAO deficiency linked to migraines.
D066	DAP	Dapsone	Antibiotic used in leprosy.	DAP prescribed in leprosy clinic.
D067	DAR	Dose Adjustment Required	Clinical note for renal/hepatic impairment.	Antibiotic charted as DAR.
D068	DAS	Disease Activity Score	Used in rheumatoid arthritis monitoring.	DAS28 used to assess RA.
D069	DAT	Direct Antiglobulin Test	Coombs test for hemolysis.	DAT positive in autoimmune anemia.
D070	DAU	Drug Abuse Urine	Screening for illicit drugs.	DAU positive for opiates.
D071	DB	Direct Bilirubin	Conjugated bilirubin lab test.	DB elevated in cholestasis.
D072	DBA	Diamond-Blackfan Anemia	Rare congenital anemia.	DBA diagnosed in child.
D073	DBC	Differential Blood Count	Breakdown of WBC types.	DBC showed neutrophilia.
D074	DBI	Drug-Drug Interaction Index	Quantifies interaction risk.	DBI high in polypharmacy case.
D075	DBP	Diastolic Blood Pressure	Lower blood pressure value.	DBP measured at 85 mmHg.
D076	DBT	Dialectical Behavior Therapy	Psychotherapy for borderline disorder.	Patient enrolled in DBT program.
D077	DC	Direct Current / Discharge	Medical or electrical context.	Cardioversion with DC shock.
D078	DCA	Deoxycholic Acid	Bile acid and lab test.	DCA measured in cholestatic disease.
D079	DCC	Defibrillation Cardiac Conversion	Electrical therapy for arrhythmias.	DCC performed for AF.
D080	DCD	Donation after Circulatory Death	Organ donation category.	Liver transplant from DCD donor.
D081	DCE	Dynamic Contrast-Enhanced Imaging	MRI/CT with contrast perfusion study.	DCE used in tumor imaging.
D082	DCF	Diffuse Cutaneous Fibrosis	Systemic sclerosis feature.	DCF noted in scleroderma.
D083	DCG	Diagnostic Coronary Angiography	Imaging of coronary arteries.	DCG performed for chest pain.
D084	DCI	Delayed Cerebral Ischemia	Stroke complication after SAH.	DCI treated with nimodipine.
D085	DCL	Decline in Consciousness Level	Neurological deterioration.	DCL observed after head trauma.
D086	DCM	Dilated Cardiomyopathy	Enlarged weak heart muscle.	Echo confirmed DCM.
D087	DCN	Dacryocystitis Neonatorum	Infection of neonatal lacrimal sac.	Newborn treated for DCN.
D088	DCO	Diffusing Capacity for CO	Pulmonary function test.	DCO reduced in pulmonary fibrosis.
D089	DCP	Des-γ-Carboxy Prothrombin	Tumor marker for HCC.	Elevated DCP in liver cancer.
D090	DCR	Dacryocystorhinostomy	Surgical bypass for blocked tear duct.	DCR performed by ophthalmologist.
D091	DCS	Decompression Sickness	Gas embolism after diving.	Diver treated for DCS.
D092	DCT	Distal Convoluted Tubule	Part of nephron in kidney.	DCT important in sodium balance.
D093	DCV	Direct-Acting Antiviral	Drug class for hepatitis C.	DCV (daclatasvir) prescribed.
D094	DCW	Dry Cell Weight	Lab measure of bacteria growth.	DCW recorded in microbiology lab.
D095	DD	Differential Diagnosis	List of possible conditions.	DD for chest pain included MI, PE.
D096	DDD	Degenerative Disc Disease	Spinal disc degeneration.	MRI confirmed DDD.
D097	DDE	Dichlorodiphenyldichloroethylene	DDT metabolite, toxic.	DDE detected in blood samples.
D098	DDF	Distal Deep Femoral	Artery or vein anatomical reference.	Thrombus found in DDF vein.
D099	DDH	Developmental Dysplasia of Hip	Pediatric hip disorder.	DDH treated with harness.
D100	DDI	Drug-Drug Interaction	Clinical effect when two drugs interact.	Statins and macrolides caused DDI.
D101	DDL	Double-Declining Life	Biostatistical or dosage model.	DDL curve applied in pharmaceutics.
D102	DDM	Dynamic Disease Modeling	Epidemiological model.	DDM used in COVID-19 projections.
D103	DDN	Dorsal Digital Nerve	Nerve of fingers and toes.	DDN injured in trauma.
D104	DDO	Doctor of Dental Oncology	Specialist degree.	Patient referred to DDO.
D105	DDR	DNA Damage Response	Cellular repair mechanism.	DDR pathway targeted in cancer therapy.
D106	DDS	Doctor of Dental Surgery	Professional dental degree.	DDS performed root canal.
D107	DDT	Dichlorodiphenyltrichloroethane	Pesticide with toxic effects.	DDT exposure linked to cancer.
D108	DDV	Distal Deep Vein	Anatomical venous reference.	Ultrasound confirmed DDV clot.
D109	DDx	Differential Diagnosis	Same as DD.	DDx listed in chart.
D110	DE	Drug Eruption	Skin reaction to medication.	DE after antibiotics.
D111	DEA	Drug Enforcement Administration	US agency regulating controlled substances.	DEA number required for narcotics.
D112	DEB	Dystrophic Epidermolysis Bullosa	Severe genetic blistering disorder.	DEB diagnosed in child.
D113	DEC	Diethylcarbamazine	Anti-filarial drug.	DEC given in filariasis.
D114	DEE	Developmental Epileptic Encephalopathy	Severe epilepsy syndrome.	DEE diagnosed in infant.
D115	DEF	Defibrillator	Device for cardiac arrest.	AED is a type of DEF.
D116	DEH	Dehydration	Fluid loss condition.	IV fluids given for DEH.
D117	DEL	Delirium	Acute confusional state.	ICU patient developed DEL.
D118	DEM	Dementia	Chronic cognitive decline.	Alzheimer’s is a form of DEM.
D119	DEN	Dengue	Viral infection with fever and bleeding.	Patient positive for DEN NS1 antigen.
D120	DEP	Depression	Psychiatric disorder with low mood.	Patient treated for DEP.
D121	DER	Dermatitis	Skin inflammation.	Contact DER treated with steroid cream.
D122	DES	Drug-Eluting Stent	Stent releasing medication.	DES placed in coronary artery.
D123	DET	Detection	Clinical or lab identification.	Early DET of cancer improves survival.
D124	DEU	Diabetic Eye Ulcer	Severe diabetes complication.	DEU required urgent care.
D125	DEV	Device	Medical equipment abbreviation.	Pacemaker marked as DEV.
D126	DEW	De Winter’s Pattern	ECG sign of LAD occlusion.	ECG showed DEW pattern.
D127	DF	Dengue Fever	Viral illness with fever and pain.	DF outbreak reported.
D128	DFA	Direct Fluorescent Antibody	Diagnostic test for microbes.	DFA used in RSV diagnosis.
D129	DFB	Distal Femoral Bone	Anatomical reference.	Fracture of DFB noted.
D130	DFC	Diffuse Fibrocystic Changes	Benign breast condition.	Mammogram showed DFC.
D131	DFE	Dilated Fundus Examination	Ophthalmic exam with dilation.	DFE done in diabetes patient.
D132	DFF	Double Filtration Plasmapheresis	Blood purification therapy.	DFF used in autoimmune disease.
D133	DFI	Diabetic Foot Infection	Complication of diabetes.	Broad antibiotics for DFI.
D134	DFL	Distal Fibular Ligament	Anatomical ligament.	MRI showed DFL tear.
D135	DFM	Decreased Fetal Movement	Obstetric emergency.	Mother admitted with DFM.
D136	DFMO	Difluoromethylornithine	Anticancer/anti-trypanosome drug.	DFMO in clinical trial.
D137	DFO	Deferoxamine	Iron chelator drug.	DFO used in thalassemia.
D138	DFP	Diisopropyl Fluorophosphate	Toxic organophosphate.	DFP poisoning treated in ER.
D139	DFR	Distal Femoral Replacement	Orthopedic surgery.	Cancer patient received DFR.
D140	DFS	Disease-Free Survival	Oncological outcome measure.	Trial reported DFS at 5 years.
D141	DFT	Defibrillation Threshold	Minimum energy for cardioversion.	DFT tested during ICD placement.
D142	DFU	Diabetic Foot Ulcer	Common diabetes complication.	DFU treated with wound care.
D143	DFX	Deferasirox	Oral iron chelator drug.	DFX given in thalassemia.
D144	DG	Diagnostic Group	Medical coding classification.	Patient coded under DG.
D145	DGA	Delayed Graft Acceptance	Post-transplant complication.	Renal transplant patient had DGA.
D146	DGBI	Disorders of Gut-Brain Interaction	Functional GI disorders.	IBS classified as DGBI.
D147	DGC	Differential Gene Copy	Molecular genetics marker.	DGC used in CNV analysis.
D148	DGE	Delayed Gastric Emptying	Post-surgical complication.	DGE after vagotomy.
D149	DGF	Delayed Graft Function	Poor early transplant function.	DGF in kidney transplant.
D150	DGI	Disseminated Gonococcal Infection	Gonorrhea spread to blood/joints.	Arthritis due to DGI.
D151	DGL	Distal Gastric Lesion	Endoscopic finding.	Biopsy taken from DGL.
D152	DGN	Diagnosis	Another shorthand for diagnosis.	Charted as DGN: COPD.
D153	DGO	Doctor of Gynecology & Obstetrics	Specialist qualification.	Patient referred to DGO.
D154	DGR	Drug Resistance Gene	Genetic cause of antimicrobial resistance.	DGR detected in bacteria.
D155	DGS	Down’s Growth Syndrome	Outdated for Down syndrome.	Previously called DGS.
D156	DGT	Delayed Graft Thrombosis	Transplant vascular complication.	Doppler confirmed DGT.
D157	DGX	Diagnostic X-ray	General medical imaging.	DGX taken for pneumonia.
D158	DH	Dermatitis Herpetiformis	Skin manifestation of celiac disease.	DH treated with dapsone.
D159	DHA	Docosahexaenoic Acid	Omega-3 fatty acid.	DHA supplement in pregnancy.
D160	DHB	Dehydrobenzoin	Chemical metabolite.	DHB studied in toxicology.
D161	DHEA	Dehydroepiandrosterone	Adrenal steroid hormone.	Low DHEA in Addison’s disease.
D162	DHF	Dengue Hemorrhagic Fever	Severe dengue form with bleeding.	DHF admitted to ICU.
D163	DHI	Dizziness Handicap Inventory	Patient-reported questionnaire.	ENT used DHI scale.
D164	DHL	Diffuse Histiocytic Lymphoma	Old term for lymphoma type.	DHL reclassified in oncology.
D165	DHODH	Dihydroorotate Dehydrogenase	Enzyme target in RA therapy.	Leflunomide inhibits DHODH.
D166	DHP	Dihydropyridine	Calcium channel blocker class.	Amlodipine is a DHP.
D167	DHR	Dihydrorhodamine Test	Neutrophil function test.	DHR abnormal in CGD.
D168	DHS	Dynamic Hip Screw	Orthopedic fixation device.	DHS used in hip fracture repair.
D169	DHT	Dihydrotestosterone	Potent androgen hormone.	High DHT in BPH.
D170	DI	Diabetes Insipidus	Condition with polyuria and polydipsia.	DI diagnosed with water deprivation test.
D171	DIA	Diagnostic Imaging Angiography	Imaging of blood vessels.	DIA performed for stroke patient.
D172	DICD	Drug-Induced Cardiac Dysfunction	Cardiotoxicity from drugs.	Chemotherapy led to DICD.
D173	DID	Dissociative Identity Disorder	Psychiatric condition with multiple personalities.	DID managed with therapy.
D174	DIF	Direct Immunofluorescence	Skin and renal biopsy test.	DIF confirmed lupus nephritis.
D175	DIG	Digoxin	Cardiac glycoside drug.	DIG given in AF with CHF.
D176	DIN	Drug Identification Number	Regulatory code for drugs.	DIN required for prescription.
D177	DIP	Desquamative Interstitial Pneumonia	Rare ILD type.	DIP confirmed on biopsy.
D178	DIR	Diffuse Infiltrative Retinopathy	Ocular finding.	HIV patient developed DIR.
D179	DIS	Disseminated Infection Syndrome	Severe systemic infection.	ICU patient managed for DIS.
D180	DISE	Drug-Induced Sleep Endoscopy	Procedure for OSA assessment.	DISE performed before surgery.
D181	DIT	Drug-Induced Thrombocytopenia	Platelet drop due to medications.	Heparin caused DIT.
D182	DIV	Diverticulitis	Inflammation of diverticula.	CT confirmed acute DIV.
D183	DJD	Degenerative Joint Disease	Osteoarthritis.	X-ray confirmed DJD.
D184	DJP	Distal Jejunal Perforation	GI emergency.	Surgery performed for DJP.
D185	DJV	Distal Jugular Vein	Anatomical term.	Catheter inserted in DJV.
D186	DK	Diabetic Ketoacidosis	Same as DKA.	ER note recorded DK.
D187	DLBP	Diffuse Low Back Pain	Common musculoskeletal complaint.	Patient complained of DLBP.
D188	DLBCL	Diffuse Large B-Cell Lymphoma	Aggressive NHL subtype.	Chemo given for DLBCL.
D189	DLC	Differential Leukocyte Count	Same as DBC.	DLC reported neutrophilia.
D190	DLD	Dyslipidemia	Abnormal lipid profile.	Statins prescribed for DLD.
D191	DLH	Diffuse Lung Hemorrhage	Severe pulmonary bleeding.	DLH confirmed by bronchoscopy.
D192	DLI	Donor Lymphocyte Infusion	Post-BMT immunotherapy.	DLI given after relapse.
D193	DLL	Distal Lower Limb	Anatomical reference.	DVT in DLL vein.
D194	DLM	Distal Limb Muscle	Anatomical reference.	MRI showed DLM wasting.
D195	DLP	Dyslipoproteinemia	Abnormal lipoproteins.	DLP noted in lab report.
D196	DLS	Degenerative Lumbar Spondylosis	Spinal degeneration.	MRI showed DLS.
D197	DLT	Dose-Limiting Toxicity	Side effect limiting drug use.	Trial stopped due to DLT.
D198	DLV	Delavirdine	Antiretroviral drug.	DLV used in HIV regimen.
D199	DM	Diabetes Mellitus	Chronic metabolic disease.	Patient diagnosed with DM type 2.
D200	DMD	Duchenne Muscular Dystrophy	Genetic neuromuscular disorder.	Boy diagnosed with DMD.