A 45-year-old married female, a known case of diabetes since 2 years, was diagnosed with hypertension 4 months ago for which she was prescribed olmesartan medoxomil 10 mg once daily. Her diabetes was well controlled by Metformin 500 mg once daily. The patient did not give any past or family history of allergy or dermatological diseases. Within 1 week of starting treatment with olmesartan, the patient developed itchy maculopapular erythematous rashes over the neck. However, she did not attribute it to the drug and thought them to be due to photosensitivity.
In spite of the extensive use of sunscreen, the rashes slowly progressed and affected forearms as well. The rashes were becoming larger, more pruritic and had spread all over the body within 2 months. She consulted a dermatologist who prescribed topical fluticasone ointment and levocetrizine 5 mg once daily. The differential diagnosis…