A drug side effect causing distinctive, linear, whip-like (flagellate) streaks of hyperpigmentation on the trunk after scratching.
The third stage of this genetic disorder is characterized by a distinctive pattern of hyperpigmentation in swirling, whorled, or linear streaks that follow Blaschko's lines.
A benign condition with streaks and swirls of hyperpigmentation following Blaschko's lines, without the preceding inflammatory stages of incontinentia pigmenti.
Normal variants of pigmentation appearing as abrupt lines separating areas of darker and lighter skin, often on the limbs or chest.
Darkening of the skin that occurs after any linear inflammatory process has resolved, such as a scratch or phytophotodermatitis.
A rare reaction to eating shiitake mushrooms causing a distinctive, intensely pruritic, whip-like (flagellate) linear erythematous eruption that becomes hyperpigmented.
