From the history and attached image, the lesion appears more suggestive of a fungal infection (tinea/cruris corporis) rather than psoriasis, although confirmation requires clinical examination. Psoriasis usually presents as thicker, well-defined plaques with silvery scales and often involves elbows, knees, scalp, or multiple sites.
Lack of improvement after 19 days can occur due to:
* Inadequate duration of treatment
* Incorrect application
* Use of steroid-containing creams previously
* Resistant/recurrent fungal infection
This is not a typical early sign of
HIV by itself.
Diabetes can predispose to recurrent fungal infections, so if symptoms are frequent, screening blood
sugar may be useful.
Next Steps
Please have a consultation booked with me for further treatment.