Eye professionals! Is this a sty?

I have bumps, almost like acne, growing on both of my top eyelids. The eyelid is swelling. The effected area is painful to the touch and becomes dry easily. The acne-like bumps spread to other areas as well, but it is not as bad as the eye. It's not smallpox, but it does resemble it with the many pimples on it.It seems to swell up at times and deflate at other times. Is this sty, or some other form of infection? I've never had this before. I went to a doctor and he Rx'd Triamcinolone Acetonide cream and Hydrocortisone cream. He didn't tell me what it was though. Please, what is this condition?