sometime i have this as well

don't know what is this

i did tried to used some cream like Mopiko, minyak kapak, scabies cream, pimple cream like OXY10, and etc

none of them works

so i just ignore it

it will go away after some time

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Added on
need pros here to tell what is this, i wonder to know as well

wah suddenly a few ?

that's uncommon, better seek doctor advice

for my case it only pop 1, random place, but will happen from time to time, but quite rare