Conversation: The conversation between human and AI assistant.
[|Human|] Hello, I am on 8 mg of Coumadin and 75 mg of Plavix per day. Can sun exposure cause a problem with either of these medications? I did get a purplish rash on my right arm the last time I swam for an hour in the sun. However, it is healing quickly. And, I am not sure if it was caused by the sun exposure.
[|AI|]  Hi, Yes, it could be a photoallergic light eruption secondary warfarin. I suggest you to use a broad spectrum sunscreen throughout the day. Reapply every 2-3 hours. In addition, I suggest you to apply a moderately potent topical steroid e.g. mometasone furnace cream, twice daily for the rashes. You may also take an OTC oral antihistamine e.g. Tab cetirizine once a day for symptomatic relief from itching. Hope I have answered your query. Let me know if I can assist you further.