My son has had a rash on his back for about 10 days.
In the morning is not too noticeable but by evening it seems redder. Also the pimples don't seem to long lived. Its a mix of red spots with no head a d some with a head.
He is nearly 13 and does sweat alot.
Its on his upper back mainly and a few on his chest.
I did think it was hot weather, thick school shirts and where his back pack goes but its still coming and going despite being off school.
Dr said it was folliculitis and gave us antibiotics but its still there.
First pic is morning Second Pic is later in day.