| pyoderma | <dermatology> Any purulent skin disease. Synonym: pyodermia. (18 Nov 1997) |
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| pyoderma gangrenosum | An ulcerating condition of skin resulting in heaped borders with a typical appearance. Pyoderma gangrenosum appears to be mediated by the immune system, but the exact cause is unknown. The lesion(s) usually begin as a soft nodule on the skin which proceeds to ulcerate. The ulcer enlarges and the skin at the edge is purple-red. Ulcers can become quite large. This condition is associated with several other diseases, some of which are ulcerative colitis, crohn's disease, rheumatoid arthritis, leukaemia, and cryoglobulinaemia. Pyoderma gangrenosum is usually responsive to corticosteroids. (12 Dec 1998) |
| pyoderma vegetans | A benign fungating granulomatous mass caused by chronic pyogenic infection. Synonym: pyoderma vegetans. (05 Mar 2000) |
| pyodermatitis | Synonym: pyoderma. Origin: pyo-+ G. Derma, skin, + -itis, inflammation (05 Mar 2000) |
| pyodermatosis | Synonym: pyoderma. Origin: pyo-+ G. Derma, skin, + -osis, condition (05 Mar 2000) |
| chancriform pyoderma | A persistent, necrotizing, ulcerated, single pyogenic lesion, usually on the face or genitalia. (05 Mar 2000) |
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| primary pyoderma | A pyoderma, such as impetigo, in which pus formation is an essential part of the disease. (05 Mar 2000) |
| secondary pyoderma | A pyoderma in which an existing skin lesion (eczema, herpes, seborrheic dermatitis, etc.) becomes secondarily infected. (05 Mar 2000) |