9 doctors weighed in:
Son just got over a fever virus and now has sores in his mouth that hurts him. What should I do?
9 doctors weighed in

Dr. Joseph Eastern
Dermatology
6 doctors agree
In brief: See doctor
I disagree that this is herpes, which rarely causes sores inside the mouth.
Viruses can cause "canker sores", and there is a specific virus called "hand/foot/mouth", which also causes blisters on the hands and feet. Most mouth ulcers heal without treatment, but if your son is in pain and/or is having trouble eating, see your doctor.

In brief: See doctor
I disagree that this is herpes, which rarely causes sores inside the mouth.
Viruses can cause "canker sores", and there is a specific virus called "hand/foot/mouth", which also causes blisters on the hands and feet. Most mouth ulcers heal without treatment, but if your son is in pain and/or is having trouble eating, see your doctor.
Dr. Joseph Eastern
Dr. Joseph Eastern
Thank
Dr. Joshi Aditi
General Practice
3 doctors agree
In brief: Need more info
Your son should have a follow up exam, could be many things canker sore, strep, thrush.

In brief: Need more info
Your son should have a follow up exam, could be many things canker sore, strep, thrush.
Dr. Joshi Aditi
Dr. Joshi Aditi
Thank
Allison Greco
General Practice
1 doctor agrees
In brief: Depends
Was your son at the doctor when he had his fever? It is possible that he picked up one of the herpes viruses that cause cold sores.
It is also not uncommon for a child to develop rashes in reaction to a virus. However, there are more serious causes of these ulcers, and you should visit with your son's physician.

In brief: Depends
Was your son at the doctor when he had his fever? It is possible that he picked up one of the herpes viruses that cause cold sores.
It is also not uncommon for a child to develop rashes in reaction to a virus. However, there are more serious causes of these ulcers, and you should visit with your son's physician.
Allison Greco
Allison Greco
Answer assisted by Allison Greco, Medical Student
Thank
Dr. James Huang
Family Medicine
In brief: See your physician
The most likely virus causing sore would be herpes simplex, which appear when the immune system is weak.
There are several medications that may help such at abreva which is otc. Sometimes the combination of an oral antiviral and a topic cream will reduce the time that the sore is present. See your physician to make sure there is no underlying illness such as a bacterial infection.

In brief: See your physician
The most likely virus causing sore would be herpes simplex, which appear when the immune system is weak.
There are several medications that may help such at abreva which is otc. Sometimes the combination of an oral antiviral and a topic cream will reduce the time that the sore is present. See your physician to make sure there is no underlying illness such as a bacterial infection.
Dr. James Huang
Dr. James Huang
Thank
Get help from a real doctor now
Dr. Cindy Juster
Board Certified, Pediatrics
32 years in practice
2M people helped
Continue
107,000 doctors available
Read more answers from doctors