Red bumps of my skin, what cause this?

Recently I started to have this dime size red bumps on my torso. At first I thought it be a spider bite, because I only have 1 of them , then I started getting mulitple ones. I have them on my chest and on my sides close to my underarms. They were red and dry so I tried to put some lotion on them. They also be itchy. Then they went away. But I still own a couple lingering around. I don't really know exactly what cause them or how to prevent them from coming back any design?Red bumps of my skin, what cause this?
sounds like sweat.
but categorically go consult a dermatologist roughly this.
go see a dermatologist. i have a rash once that started on my torso it be called pitirasis rosea...(the spelling may be wrong) but it starts surrounded by moist areas of the torso and spreads. the rash tend to look like a cedar tree. it is extremely itchy. if this is what you hold you will need a medicated soap from the dr.
my dr told me that it is adjectives in teens and younger adults and they are not sure what cause it.