PMC8727159_01
A typical burnt-like lesion of Paederus dermatitis. (a) Linear well-defined erythematous and edematous plaques were presented at patient's right side of neck. (b) Complete resolution with small degree of hyperpigmentation was observed within 14 days. (c) A photo of suspected Paederus beetle was taken by the patient.
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A 28-year-old man visited to the dermatological unit with linear well-defined erythematous and edematous plaques associated with burning sensation and slight itching at his right side of neck (Figure 1(a)). Examination of the lesions revealed the typical of kissing lesions of Paederus dermatitis for more than 24 hours after contact with the Paederus beetle (Figure 1(c)). The treatments led to complete resolution within 14 days with small degree of hyperpigmentation since his first visit (Figure 1(b)).
Generalized erythroderma with desquamation and scaling was shown around the (a) back, (b-e) body, and (f, g) legs of the patient at day 5 of follow-up.
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At 5-day follow-up, the rash caused by Paederus beetle was improved, the erythematobullous lesions were decreased but facial, body, arms, legs, and sole areas had developed generalized erythema with desquamation and scaling (Figures 2(a)-2(g)).
Recovery of the skin lesions from generalized erythema at the upper body: (a) front and (b) back and lower body: (c) front and (d) back were close to normal.
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Recovery of the skin lesions from generalized erythema was closed to normal (Figures 3(a)-3(d)).