<unk>  is a chronic skin condition that causes loss of pigment, resulting in irregular pale patches of skin that may be distributed according to different patterns.
Vitiligo physical examination
Psoriasis physical examination
Linitis plastica physical examination
Melanocytic nevus physical examination
Erythrasma physical examination
Onychomycosis physical examination
Alopecia physical examination
Squamous cell carcinoma of the skin physical examination