I weigh 283 i notice i have heat bumps a lot were a sweat between my thighs under my arm even my breast my vagina and some even get big try everythng but nothing helps i'm hairy on vagina.help?

Possible heat rash: This could be something called miliaria rubra, or heat rash. Typically occurs when the ducts that drain sweat onto your skin become clogged. It typically gets better when you cool off. Seeing a dermatologist would help you determine exactly what this could be.

Intertrigo: Intertrigo is a fancy name for a rash that shows up between the folds of skin. It is a very common skin rash that can crop up throughout life. The most common areas affected include larger skin-fold areas such as: armpits, beneath the breasts, genital area, abdomen. Treatment is to decrease moisture with zeasorb af and prescription vytone cream 1%.