Euproctis pseudoconspersa dermatitis is a dermatitis caused by euproctis pseudoconspersa.


The pathogen is euproctis pseudoconspersa, also known as tea tussock moth caterpillar.

After the poisonous hairs on the body surface of the tea tussock moth caterpillar pierce the human skin, the toxic substances migrate. The mechanical and chemical effects lead to local pruritus.

Signs and Symptoms

The rash are mostly on the exposed areas, such as the flexor surface of extremities, abdomen, upper trunk, neck, and face. There is sudden severe pruritus initially, developing into red papules after scratches, with numerous, raised, pinhead sized, red vesicles on the center, with pruritus. There is severe pruritus, particularly before going to bed at night.


If there are a history of exposure and clinical manifestations, the disease can be diagnosed.


Topical calamine lotion can be used, and oral antihistamines are appropriate if there is pruritus after external treatment.