Hello,
Without examination it is very difficult to confirm a diagnosis, but it can be solar keratosis(small rough or scaly areas of skin due to damage from sun
due to a thickening of an area of the top skin layer) , syringoma(bumps caused due to overgrowth of cells), acanthosis nigricans, seborrheic keratosis, solar lentigo, pityriasis rosea or tinea
versicolor. I sincerely advise you consult a dermatologist and get the diagnosis confirmed. Mode of treatment for all is entirely different.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.