dermatologic disorders
Diagnostic Tests for Skin Disorders
Wood Light
A Wood light (black light) can help clinicians diagnose and define the extent of lesions (eg, borders of pigmented lesions before excision). It can help distinguish hypopigmentation from depigmentation (depigmentation of Vitiligo fluoresces ivory-white and hypopigmented lesions do not). Erythrasma fluoresces a characteristic bright orange-red. 