| NUG | necrotizing ulcerative gingivitis |
|---|---|
| SCUD | septicemic cutaneous ulcerative disease |
| TUGSE | traumatic ulcerative granuloma with stromal eosinophilia |
| UD | ulcerative dermatosis; ulnar deviation; undetermined; underdeveloped; unit dose; urethral dilatation... |
| UDN | ulcerative dermal necrosis |