| Acute | Rapid onset |
|
Aetiology | Cause of the disease |
| Chronic | Slow onset and long duration |
| Communicable | One way or another is spreads |
| Congenital | Present at birth genetically or prenatally |
| Constitutional | Hereditary make-up and involving the body as a whole |
| Contagious | Rapidly spreads from one person to another |
| Deficiency | Disease comes from degeneration of tissues and organs |
|
Disease | Pathological condition of the body presenting its own symptoms and is an abnormal entity affecting all or parts of the body |
|
Endemic | Continuously found in a community |
| Familial | In several members of a family |
| Functional | No anatomical changes account for the disease |
| Hereditary | Passed down |
| Iatrogenic | Disease resulting from physicians (e.g., autosuggestion caused by examination) |
| Idiopathic | No causative factor |
| Infectious | Pathogenic organism in the body |
| Malignant | Rapid and threatening death |
| Occupational | Work source |
| Organic | Anatomical changes in organ or tissue |
| Pandemic | Very widespread disease affecting the whole country |
| Parasitic | From a parasite |
| Pathology | Essential nature of the disease in structural and functional changes in tissues and body organs which cause or are caused by the disease |
|
Periodic | Regular disease |
| Prognosis | Forecast of the result of the disease and the prospect of recovery |
| Psychosomatic | Mind and emotional cause |
| Sporadic | Occasional outbreak |
|
Subacute | Less pronounced but more prolonged than acute |
| Veneral | Sexual cause |