i have a hard pimple in my leg for about 10 months now after i tried to pop a pimple and i didn’t did it well, its a big pimple shape about 1/4 of a inch that most of the time is skin color but y i start messing with it it changes color to a brownish
Looks like a deep seated ingrowing hair that has become infected. you may need very minor surgery from your doctor to release whatever is inside. Probably pus,dead skin and a hair.