Features of Guttate Psoriasis
Important features of guttate psoriasis include:- Small, discrete, teardrop-shaped lesions usually on the trunk, but often on the arms, legs, and scalp
- The lesions start small and grow over time
- Often occurs 1 to 3 weeks after a viral or bacterial (often streptococcus) respiratory infection
- In children, the rash typically resolves on its own in weeks to months
- In adults, the rash tends to be more chronic
Guttate Psoriasis Pictures
Diagnosing Guttate Psoriasis
Guttate psoriasis is usually diagnosed based on the appearance of the rash. Because a streptococcus infection such as strep throat is often the cause, a throat culture or blood test for strep called antistreptolysin O may be done. Interestingly, these tests are recommended but treating with antibiotics is controversial.Sources:
Owen, CM, et al. "Streptococcal infection may make psoriasis worse but do antibiotics help?" British Journal of Dermatology. 151(2004): 244-5.
Schon, Michael, and W.-Henning Boehncke. "Psoriasis." The New England Journal of Medicine 352(2005): 1899-912.
Smith, Catherine, and JNWN Barker. "Psoriasis and its management." British Medical Journal 333(2006): 380-4.
van de Kerkhof, Peter. "Psoriasis." Dermatology. Ed. Jean Bolognia. New York: Mosby, 2003: 531-5. 125-37.
