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21 Jan

Rash and mouth sores
Hi My son turned one on Sunday. On Saturday he started having a stuffy nose- it just sounded stuffy and there was no runny mucous or phlegm. On Sunday he started showing a fine rash over his legs, which then spread to the rest of his body. There was also one bigger pimple which resembled a blister on his thigh. On Tuesday I noticed a yellow blister like pimple in his mouth close to his throat. There are several more blisters in the throat region. He did have roseola five months ago. The rash on his body looks very similar to roseola. It is mostly fading away now. He still sounds a bit stuffy, and I’m just concerned about the mouth sores. He is eating ok, was more fussy a few days ago. Amazingly he hasn’t had any fever during this ordeal. What could it be? Thank you
Answer
Expert
childhood diseases
Paediatrician

22 Jan

Thank you for your question. You certainly have been through an ordeal with your baby son. It is difficult to be absolutely sure about the cause of his rash and mouth sores without being able to see him. What makes a definite diagnosis more difficult is that your baby son did not have a fever with this illness. It is almost certain that his illness is due to a viral infection. There are at least 3 viral infections that cause sores or ulcers in the mouth of a young child. These are herpes stomatitis, hand foot and mouth disease and chicken pox. The first namely herpes stomatitis is very common in young children causing rather painful ulcers in the mouth and on the tongue. The illness lasts about 7 days and then clears up. Teejel Gel applied to the sores in the mouth relieves any discomfort and helps your child to eat and drink normally. I don’t think that your son had either hand foot and mouth disease and definitely not chicken pox as his rash almost definitely does not fit the description of the rash found in these illnesses. Also a fever is always present with both of these children’s illnesses. So herpes stomatitis is most likely here, fortunately your baby appears to have a relatively mild form of this illness and it should soon be over.
The information provided does not constitute a diagnosis of your condition. You should consult a medical practitioner or other appropriate health care professional for a physical examination, diagnosis and formal advice. Health24 and the expert accept no responsibility or liability for any damage or personal harm you may suffer resulting from making use of this content.
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