What are tiny red bumps on your lower inner arm caused by?

Proprobably. This is probably eczema. Please see your dermatologist for evaluation and to discuss treatment options.

Related Questions

What are those common lil white or red bumps most ppl get on arms (can look like tiny pimple)? What causes them?

Possible. If they are on the back of your upper arm mostly and kind of firm they might be keratosis pilaris. It's a plugged hair follicle filled with keratin which is made by the skin. You can get rid of them by using a mild exfoliating "puff" when you shower followed by some retin a (tretinoin) type cream (prescription) not sure if this is what you mean. Read more...

9 month old has small red bumps that are hard on back arms and thighs. What could be the cause?

Hard to know. Rashes are nearly impossible to diagnose without seeing. One of the most common rashes i see on the arms and thighs is keratosis pilaris. Google the images to see if it looks similar. Read more...

My friend's daughter about 5 month old with tiny red bumps only on her face, arm and leg. Itch cause her scratch until infected. What kind of that?

Possible Scabies. Itchy bumps in a young child could be bug bites, such as fleas, bedbugs, or scabies. In addition, a skin virus such as molluscum should be considered. This child should be seen by a dermatologist for proper diagnosis. Read more...