Is it possible to be allergic to your iPhone?

Whenever my arm or leg touches my iPhone for a second, it gets really itchy in that area. But, it doesn't effect my hands when I'm holding it.

I don't believe you could be allergic to your iPhone… It may be the materials they used to make it

Ask siri

If you are allergic to something, it doesn't matter if you touch it with your legs, arms, nose. So it doesn't sound like you are.