i think i might know what this MIGHT be...
i am 29yr old female and for as long as i can remember i have always gotten random tiny bumps on my arms or hands. no itch, not red, barely raised at all. usually when sweaty or during hot humid weather. other times for no reason at all. when i pop them its just clear liquid like water, a little sticky. usually on the top of hands, palms of hands, inside of fingers, or top of wrist.
sometimes i get just one, or a few, or a big cluster.
Google or WebMD search: HPV or warts.
one possibility: theres tons of strains of human papiloma virus, causing many different kinds of warts. they are contagious and easily spread on yourself or to others. mostly harmless but still spreadable.
2nd possibility: google or webmd search: Dyshidrosis
this is all i know about them, dont know how to cure them or stop them really.