It's difficult to point out the precise diagnosis based on the picture. The lesions are erythematous and slightly pigmented as well, these skin changes could be due to various over the counter creams used which usually contain steroid in them.
Next Steps
Stop all the medication that you have been using. And apply a good moisturizer and sunscreen.
Consult a dermatologist at your convenience.
Health Tips
Strictly do not self mediacte.