23 Mo. Old boy Rash rapidly spreading soles of feet, inner thighs, buttocks, and arms

My 23 mo old boy has had an ear infection for a week and was prescribed augmentin. he was doing better but now his congestion is way worse, green mucus in nose and chest. today he broke out in a rapid spreading rash. it started on his buttocks and inner thighs, now it is on his legs , soles of his feet (which he is itching at crazily) and on his left arm.  i soaked him in an oatmeal bath and covered him in hydrocortizone cream and gave him some benedryl. also there are about 5 bumps that look like pimples spread throughout the rash, 2 on buttocks, 2 on each leg, and one on his big toe.
any help diagnosing this ?
should i bring him to ER?  ashlynn..

[maatson]

In contrast with nonallergic(Nonitchy) amoxy rash, this sounds like a real allergy.Do consult your doc.

[Bhupinder Kaur, MD]

Hello,
Such kind of itchy bumps can be due to viral rashes or allergic reaction. You can take some antihistaminic like benadryl or Claritin. Although the rash may be itchy, avoid scratching it because you may damage the skin, and allow bacteria to get in, leading to infection. You may also need topical and oral steroids which are available under prescription. Also wear cotton clothes.

It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.

[miapia55]

Thank you all for your answers, I ended up bringing him to the hospital and he had Hand Foot & Mouth Disease, which is a wide spread virus this year in kids, but rarely in adults. BUT I overcourse ended up being one of those adults and caught it too!