What are these collection of raised bumps on my skin?

Whenever I scratch myself my skin raises up and looks like scratch marks but the marks pop up and appear to look like a blist...

I am vitamin A deficiency: I have small bumps all over my neck, upper cheeks and spreading on my arms... these bumps look lik...

Every summer I get these bumps on my skin starting from the top of my back to my butt. They're really itchy and I don't know ...

i think it might be a pimple or something coming, but it feels a lot bigger than a pimple, but its under the skin, like i can...

for the past few years...I've had these small skin coloured bumps on the shaft of my penis...and theres lots of them too...ca...

I have these reddish skin patches on my body. Its on my stomach, sides, and arms, its red and the skin is raised. What could ...

I have large bump on my back under my bra line in the center and it is painful always filled with white soft substance inside...

It has bloody puss color comes out and is the size of a dried apricot. It is under my armpit. No real pain and it scares me. ...

What causes acne and other facial disasters?

My husband has had these really small bumps that have a clear/whiteish look to them for years, but just recently they have be...