Kritika Pandey M.D.
Mystery diagnosis: Cydnidae (burrowing bug) pigmentation:
A young girl presented with sudden asymptomatic hyperpigmented macular lesions over left forearm, back and abdomen. The spots were noted after a stroll in the nearby garden.
Cydnidae insects (cydnidae, Hemiptera, Heteroptera) also called burrowing bugs, found during monsoon, feeds on plant roots and is considered harmless to human.
They produce odorous substance from special glands for self defence. This secretion causes such pigmentary asymptomatic lesions which may resemble lentigenes/ petechiae.
Clues to diagnosis include sudden appearance of asymptomatic pigmentary macules with tapering edges during rainy season. They fade away in few days.
Actual patient photographs. Please do not share/use without permission.
#dermatology #beingadermatologist #macules #cydnidae