Authors:  Maryam Kusumawaty, St N. Wahyuni, Faridha Ilyas, Sri Vitayani



Introduction: Psoriasis vulgaris is a chronic autoimmune disease in the skin. It could be triggered by infection, trauma either in the wound (koebner phenomenon) or in the other areas, and drugs. Trauma to the skin can trigger psoriatic changes in the area of ​​the skin which is referred to koebner phenomenon and generally occurs in children. Koebner’s phenomenon or isomorphic response describes the onset of lesions on the skin of psoriasis patients resulting from trauma such as surgical wounds.

Case Summary: A case of psoriasis vulgaris with koebner phenomenon was observed in a 12-year-old child with a history of laparotomy surgery with appendicitis since 3 months ago. Initially, a red spot around the wound of a laparotomy surgery on the lower abdomen then widened to the groin right and left. Red patches were appeared in the back area with thick scales and itchy. Patient was treated with cetirizine 5 mg per 24 hours orally; topical 3% salicylic acid added with 5% LCD (liquor carbon detergen), betamethasone cream, and album vaseline and showed clinical improvement.

Conclusion: Psoriasis vulgaris treatment in general solely with topical therapy can be adequate. Most cases of mild to moderate psoriasis were using topical corticosteroids as first-line therapy combined with topical keratolytic, coal tar and emollient. Education is very important because psoriasis is a life long condition that has a profound impact on the quality of life and requires special attention particularly on childhood.





koebner phenomenon, psoriasis vulgaris, trauma



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