3 years old boy touching his penis a lot embarrassing me exposing it in public, can children in this age be sexually excited or he has some infection?

Concerns: I would be concerned about this behavior if he has a pattern of repeatedly exposing his penis in public. Sometimes little boys touch their penises to reassure them self that it is still there. Touching the penis can feel pleasurable. I would be concerned that exposing himself and constantly touching himself might be related to feeling anxious or over-stimulated. I will refer this question to.

Normal and important: For children to explore own body. Let the child know it's okay to do in 'private' but not in public. If you react with embarrassment or other emotion it may reinforce the behavior. Observe the child's emotion: if he seems in pain, seek evaluation; if he simply seems curious, gently redirect re privacy; if he does it to get your reaction, change your reaction; give attention to desired behaviors.