Based on the history and the photos provided, the lesions appear more consistent with tinea corporis/tinea cruris than psoriasis or eczema. However, a definitive diagnosis cannot be made from photographs alone, and a dermatologist examination with KOH scraping/fungal microscopy may be required if there is poor response to treatment.
A few important points:
• The appearance does not specifically suggest
HIV.
• Similarly, these rashes alone are not a reliable sign of
diabetes, although recurrent or persistent fungal infections can be more common in individuals with uncontrolled blood
sugar levels.
• Lack of spread to your partner does not rule out a fungal infection.
• Fungal infections can take several weeks to resolve completely, especially when multiple body areas are involved.
Next Steps
I would advise continuing follow-up with your dermatologist, avoiding self-medication, keeping affected areas dry, and considering further evaluation (KOH test ± blood
sugar testing) if there is inadequate improvement after the prescribed course.
If you can share clearer close-up images of all affected areas and the exact duration/dosage of treatment taken so far, a more specific opinion can be provided.