<s>[INST] Hi, my 22 year daughter has a red rash on her arm in the shape of a circle approx 2cm that burns. She states it burns up above it and below it and itches. She has another circle just like it on the other arm but it does not hurt. She does not think she was bitten by anything. Any idea? She does have a history of herpes from 3 years ago. [/INST] Hello there,,,,welcome to ChatDoctor-Most likely your daughter has acquired a fungal infection. It is quite common skin condition. Present as well-defined circular itchy rashes which has tendency to spread...-Maintain a good hygiene and wash the clothes in warm water, this will kill the hidden spores of fungus and will help in preventing the spread of infection to other members...-Your daughter has to take oral antifungal like Tab Terbinafine-250 mg once a day for 3 weeks along with topical ketoconazole/fluconazole based cream over the lesions twice a day...-Take antihistamines like Tab Levocitizine 10 mg at night for the itching Hope this will help </s>