I have these bites on my skin arms, fingers, belly and feet. they look like pimples without white heads.they itch but hurt .help?

Bites: What made you think that these are bites . Were you out in the yard or did you see an insect bite you? The skin lesion could be a dermatitis, an allergy to something that you were in contact with or it may be a skin infection. In any event if it persist and does not go away have your doctor take a look at it.

Need exam: A doctor needs to look at the lesions and the distribution / pattern on your body. It could be folliculitis or any host of other dermatologic conditions.