• 22
    Jan
  • A Case of Paederus Dermatitis: DISCUSSION

Paedures dermatitis is an acute irritant contact dermatitis caused by insects of the Genus Paederus, Family Staphylinidae, Order Coleoptera. The genus Paederus consists of over 600 species which are distributed worldwide. The major species found in Kenya are the Paederus sabaeus and the Paederus crebrepunctatus, known the ” airobi Fly,/3, while Paederus fuscipes is the only reported scecies to have caused Paederus dermatitis in Korea. Morphologi­cally, Paederus beetles, range from 5 mm to 10 mm in length, have a narrow, elongated body with a black head, and may resemble ants. They can fly, but they prefer to crawl or run. They do not bite or sting, but accidentally brushing against the skin or being crushed on the skin results in secretion of paederin as a defense mechanism. Paede­rus dermatitis on the dorsum of the left hand.

Paederus dermatitis has been reported in manv countries including Australia, Tanzania, Iran, Turkey, and Nigeria. Most cases happen during the night as the beetles are attracted to artificial light sources, hence, the local name ” ight burn”‘. After paederin is released by the beetle, localized erythema and a stinging, burning sensation occurs within 12 to 24 gap hours. Pinhead-sized vesicles occur 2-4 days after this, which may be linear due to wiping of the insect off the skin, giving it a ” hiplash” appearance. Mirror image, ” ssing lesions” nay be seen in skin flexures where the insect was acci­dentally crushed, transferring the paederin to the opposing skin surface. The exposed areas of the body such as the face, neck, and arms are predilection sites, but some lesions occur on covered skin, presumably due to the beetles crawling underneath the clothing1. These lesions usually disappear within 1 to 2 weeks, occasionally leaving postinflammatory hyperpigmen- tation.  eriacta 100 mg

The treatments of Paederus dermatitis are sympto­matic. Topical corticosteroids and oral antihista­mines are helpful in cases with severe itching. Wet dressings and oral antibiotics may be needed in the acute stage to prevent secondary infection.

Diagnosis is not difficult due to the characterized cutaneous manifestation, but Paederus dermatitis is often misdiagnosed and treated as herpes zoster,

bullous impetigo or another allergic contact derma­titis. Our patient had a history of night burn and characteristic skin lesions such as vesicobullous eruption and ” .ssing lesions” vhich were consistent with Paederus dermatitis.

In Korea, a regional outbreak of Paederus derm­atitis first occurred in the southern area of Chunnam province in 1968, followed by an outbreak in the midwest area of the Kyungpuk province in 1994. Our case may be the first one which occurred in a Korean traveler outside Korea.

Local clinicians in tropical regions where Paederus dermatitis is common are familiar with the condition, and will diagnosis it without much difficulty. In Korea, there have been a few reports of Paederus dermatitis due to Paederus fuscipes since 1968. However, with an increasing number of people traveling to hot and tropical regions, Paederus dermatitis should be considered in the differential diagnosis of vesicular rashes, when the patient has history of travel to these regions.  cialis professional

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