Thank you so much for your helpful information. :)
Hi,
This could be because of the sun burn which would have been aggravated by the dry skin you have.
You should use a medicated sun screen all the time - preferably one prescribed by your doctor or skin specialist.
You should wash your face several times with a non drying face wash and also refrain from using too many cosmetic products. Drink plenty of water, and wear a hat when going out in the sun, or use an umbrella.
If the lesions still remain after a few days, consult your doctor or skin specialist and get a clinical examination.
Let us know about how you are doing and if you have any other doubts.
Regards.
By the way, I have very dry skin, and I've never had acne.