Ritu Gupta, MB BS (Hons). Kurosh Parsi, FACD.
Chronic urticaria due to Blastocystis hominis
Article first published online: 4 APR 2006
Australasian Journal of Dermatology
Volume 47, Issue 2, pages 117–119, May 2006
How to Cite
Gupta, R. and Parsi, K. (2006), Chronic urticaria due to Blastocystis hominis. Australasian Journal of Dermatology, 47: 117–119. doi: 10.1111/j.1440-0960.2006.00244.x
- Issue published online: 4 APR 2006
- Article first published online: 4 APR 2006
- Submitted 18 April 2005; accepted 6 October 2005.
- contact urticaria;
- intestinal parasite;
- non-steroidal anti-inflammatory cream
A 24-year-old woman had a 9-week history of second to third daily urticaria that began after an episode of contact urticaria to topical bufexamac. She was found to have an underlying gastrointestinal infection with Blastocystis hominis. This was thought to be clinically relevant as she had a history of mild chronic diarrhoea. After treatment of the Blastocystis hominis, her urticaria ceased. This could indicate the importance of performing stool microscopy and culture on all patients with chronic urticaria of unknown aetiology. The relationship of urticaria to intestinal parasites and the possibility that non-steroidal anti-inflammatory medications could act as cofactors that help precipitate an urticarial reaction is discussed.