| D&C | See Dilation And Curettage. |
| DCM | Dilated Congestive Cardiomyopathy, the most common type of cardiomyopathy. |
| Deciliter | 0.1 or one tenth of a liter. |
| Decoction | Liquid prepared by boiling plant material in water for a period of time. |
| Decubitus Ulcer | Bed sore. |
| Dehydroascorbate | An oxidized form of ascorbic acid (vitamin C). |
| Delta-6-Desaturase | |
| Dementia | |
| Demulcent | An agent which soothes and relieves irritation, especially of the mucous membranes. |
| Dental Floss | A thin, nylon string, waxed or unwaxed, that is inserted between the teeth to remove food and plaque. |
| Dermatitis | |
| Dermatofibrosarcoma Protuberans | |
| Dermatome | The area of skin innervated by a single posterior spinal nerve (sensory nerve). |
| Dermatomyositis | |
| Desiccated Pig Glandular | Examples of desiccated pig glandular thyroid hormone replacements include: Armour, Westhroid, Thyroid, or Nature-throid |
| Desmoid Tumor | |
| Desmoid Tumors | See Desmoid Tumor. |
| Desmoplastic Small Cell Tumor | |
| DFSP | See Dermatofibrosarcoma Protuberans. |
| DHA | |
| DHEA | |
| DHEA-S | See DHEA. |
| DHT | See Dihydrotestosterone. |
| Diabetes | See Diabetes Mellitus. |
| Diabetes Insipidus | |
| Diabetes Mellitus | |
| Diabetic | See Diabetes Mellitus. |
| Diabetic Retinopathy | |
| Diabetics | See Diabetes Mellitus. |
| Dialysis | |
| Diaphoretic | |
| Diaphragm | |
| Diarrhea | |
| Diastole | |
| Diastolic | |
| Diathesis | Constitutional state of increased susceptibility to disease. |
| Dietary Fiber | |
| Dihydrotestosterone | |
| Dilatation | |
| Dilation and Curettage | |
| Discharge | |
| Discharges | See Discharge. |
| Distal | Anatomically located further away from a point of reference, such as an origin or a point of attachment. |
| Distended | See Distention. |
| Distention | An excess expansion of a tissue or organ, either from inflammation, injury or gas. |
| Diuresis | |
| Diuretic | |
| Diuretics | See Diuretic. |
| Diverticular Disease | |
| Diverticulitis | See Diverticular Disease. |
| Diverticulosis | See Diverticular Disease. |
| dL | See Deciliter. |
| DLPA | |
| DMG | See Tri-Methyl-Glycine. |
| DNA | Deoxyribonucleic acid, the large molecule that is the main carrier of genetic information in cells. DNA is found mainly in the chromosomes of cells. |
| Dopamine | |
| Dosha | |
| Doshas | See Dosha. |
| Double-jointed | See Double-jointedness. |
| Double-jointedness | Having unusually flexible joints that can bend in unusual ways or to an abnormally great extent. |
| Dromotropic | Affecting conductivity of nerve fibers. |
| Dropsy | See Hydrops. |
| DUB | See Dysfunctional Uterine Bleeding. |
| Duct Tape | Wide, canvas-backed tape with a strong rubber-based adhesive. Very commonly used in the United States for everything from taping boxes to vehicle repair! |
| Duodenal | See duodenum. |
| Duodenal Ulcer | See Peptic Ulcer. |
| Duodenal Ulcers | See Peptic Ulcer. |
| Duodenum | |
| Dupuytren's Contracture | A disease of the palmar fascia (the thin but tough layer of fibrous tissue between the skin of the palm and the underlying flexor tendons of the fingers) resulting in progressive thickening and contracture of fibrous bands on the palm of the hand and fingers. The cause is unknown. |
| Dyscrasia | Abnormal or pathological imbalance due to excessive material in the blood. |
| Dysentery | |
| Dysfunctional Family | A family in which problems tend to be chronic and in which children's needs are not met. Negative patterns of parental behavior tend to be dominant in their children's lives. Most families have some periods of time where functioning is impaired by stressful circumstances such as a death, an illness or the loss of a job. Healthy families return to normal functioning after the crisis passes. |
| Dysfunctional Uterine Bleeding | |
| Dyskinesia | |
| Dysmenorrhea | |
| Dyspepsia | |
| Dysphagia | |
| Dysphonia | |
| Dysplasia | |
| Dyspnea | |
| Dysrhythmia | Often Cardiac dysrhythmia: Any irregularity of heart beat. |
| Dysthymia | |
| Dystonia | |
| Dysuria | |
