| polygenic diseases | Genetic disorders that are caused by the combined action of more than one gene. Examples of polygenic conditions include hypertension, coronary heart disease, diabetes, and peptic ulcers. Because such disorders depend on the simultaneous presence of several genes, they are not inherited as simply as single-gene diseases. (12 Dec 1998) |
|---|---|
| myocardial diseases | Diseases of the myocardium. (12 Dec 1998) |
| poultry diseases | Diseases of birds which are raised as a source of meat or eggs for human consumption and are usually found in barnyards, hatcheries, etc. The concept is differentiated from bird diseases which is for diseases of birds not considered poultry and usually found in zoos, parks, and the wild. (12 Dec 1998) |
| hair diseases | Diseases affecting the orderly growth and persistence of hair. (12 Dec 1998) |
| primate diseases | Diseases of animals within the order primates. This term includes diseases of haplorhini and strepsirhini. (12 Dec 1998) |
| prion diseases | Transmissible and genetic neurodegenerative diseases of humans and animals caused by prions. The diseases are usually characterised by vacuolation in the gray matter and result in ataxia, motor disturbances, dementia, and progression to a fatal outcome. They include creutzfeldt-jakob syndrome, gerstmann-straussler syndrome, kuru, scrapie, fatal familial insomnia, bovine spongiform encephalopathy (encephalopathy, bovine spongiform), transmissible mink encephalopathy, and chronic wasting disease of mule deer and elk. The literature has sometimes referred to these as unconventional slow virus diseases. (12 Dec 1998) |
| hemic and lymphatic diseases | Haematologic diseases and diseases of the lymphatic system collectively. Hemic diseases include disorders involving the formed elements (e.g., erythrocyte aggregation, intravascular) and chemical components (e.g., blood protein disorders); lymphatic diseases include disorders relating to lymph, lymph nodes, and lymphocytes. (12 Dec 1998) |
| scleral diseases | General disorders of the sclera or white of the eye. They may include anatomic, embryologic, degenerative, or pigmentation defects. (12 Dec 1998) |
| horse diseases | Diseases of domestic and wild horses of the species equus caballus. (12 Dec 1998) |
| sexually transmitted diseases | Diseases due to or propagated by sexual contact. (12 Dec 1998) |
| sexually transmitted diseases, bacterial | Bacterial diseases transmitted or propagated by sexual conduct. (12 Dec 1998) |
| sexually transmitted diseases in women | Gonorrhoea and chlamydia are bacterial sexually transmitted diseases (stds) frequently found together. Gonorrhoea is not transmitted from toilet seats. Women infected with it may not have any symptoms but can end up later with severe pelvic infection. Early syphilis causes a mouth or genital ulcer (chancre) and later can cause hair loss, headaches, sore throat, and skin rash. Even later, syphilis can lead to heart and brain damage. Genital herpes is a viral infection that can cause painful genital sores. Genital warts are caused by viruses and can increase a woman's risk for cancer of the cervix. Aids is caused by the human immunodeficiency virus (HIV). Hepatitis b is a virus that causes liver inflammation and can lead to cirrhosis and cancer of the liver. Hepatitis b can now be prevented with a vaccine. There is no safe sex. Condoms do not necessarily prevent stds. (12 Dec 1998) |
| sexually transmitted diseases, viral | Viral diseases which are transmitted or propagated by sexual conduct. (12 Dec 1998) |
| sheep diseases | Diseases of domestic and mountain sheep of the genus ovis. (12 Dec 1998) |
| single-gene diseases | Hereditary disorders caused by a change (mutation) in a single gene. There are thousands of single-gene diseases including achondroplastic dwarfism, huntington disease, cystic fibrosis, sickle cell disease, duchenne muscular dystrophy, and haemophilia. Single-gene diseases typically describe classic simple mendelian patterns of inheritance (as autosomal dominant, autosomal recessive, and x-linked traits) by comparison with polygenic diseases. (12 Dec 1998) |