My daughter has red itchy bumps on her arms and feet. what could be the cause? she was diagnosed with a staph infection but the bumps persist. bed bugs were mentioned but she is the only person being bitten. could this be an allergic reaction to something

This : This is tough to answer without a picture. There are several possibilities including bites (fleas or other), eczema or allergic contact dermatitis, lichen planus, folliculitis (staph infection), and others. I doubt bed bugs given the location. I would recommend you try a moisturizer such as cerave cream twice daily and if not better after a few days consider a trip to the dermatologist for diagnosis and treatment options. Bites are common in kids so that is certainly a possibility. If they are bites, avoidance plus a steroid gel might be beneficial. I hope that helps.

How : How long have the bumps been present? Do they change at all?