A study of blister beetle dermatitis
Keywords:Blister beetle, Dermatitis, Paederus, Pigmentation
Background: Blister beetle dermatitis is an irritant dermatitis caused mainly by beetles of the genus Paederus. It is clinically characterised by acute onset of linear erythematous plaques mainly over exposed areas like face, neck and upper limb.
Methods: Fifty four patients with blister beetle dermatitis who presented to the dermatology outpatient department over a period of three months from May 2017 to July 2017 were included in this study. The various clinical patterns of blister beetle dermatitis observed in these patients are described.
Results: Face was the commonest site involved (48%) followed by upper limb (33%). Linear erythematous plaques with or without vesiculation were seen in 78% and kissing lesions were seen in 6 patients. Majority of patients (83%) had burning sensation at the site of the lesions and residual pigmentation was seen in 92% of patients.
Conclusions: Blister beetle dermatitis is a common problem in tropical countries like India. Knowledge about the various clinical presentations will help in early diagnosis and treatment.
Verma CR, Agarwal S. Blistering beetle dermatitis: An outbreak. Med J Armed Forces India. 2006;62:42-4.
Hegde SS, Bhat MR. An outbreak of blister beetle dermatitis in a residential school: A clinical profile. Muller J Med Sci Res. 2017;8:47-51.
Singh G, Yousuf Ali S. Paederus dermatitis. Indian J Dermatol Venereol Leprol. 2007;73:13-5.
Karthikeyan K, Kumar A. Paederus dermatitis. Indian J Dermatol Venereol Leprol. 2017;83:424-31.
Mittal A, Mehta S, Garg A, Gupta L, Kuldeep CM, Khare AK, et al. A study of beetle dermatitis. Indian J Clin Pract. 2013;23:714‑6.
Toppo NA, Bhadoria AS, Kasar PK, Trivedi A. Paederus dermatitis among residents of nursing hostel in central India: An outbreak investigation. Indian Dermatol Online J. 2013;4:153-5.
Cáceres L, Suarez JA, Jackman C, Galbster A, Miranda R, Murgas I, et al. Dermatitis Due to Paederus Colombinus: Report of an Epidemic Outbreak of 68 Cases in the Province of Darien, Panama. Cureus. 2017;9:1158.
Srihari S, Kombettu AP, Rudrappa KG, Betkerur J. Paederus dermatitis: A case series. Indian Dermatol Online J. 2017;8:361-4.
Coondoo A, Nandy J. Paederus Dermatitis: An Outbreak, Increasing Incidence or Changing Seasonal Pattern? Indian J Dermatol. 2013;58:410.