Hello,
It can be due to dyshidrotic eczema or pompholyx. It is characterized by a sudden onset of many deep-seated pruritic, clear vesicles which itch and then peel off. As a result the skin may also fissure.
Dyshidrotic is a form of dermatitis skin that is seen in patients with Atopic Dermatitis, contact with a chemical substance like nickel, or cobalt, too much emotional trauma, or stress or even when there are extreme weather and temperature changes. Smoking and excessive coffee consumption are believed to play an aggravating role.
I suggest you to get an examination done from a dermatologist.
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.
to me it just seems like these are because of your sweat. sweat bumps! i would suggest consulting your dr though! best of luck!