7 doctors weighed in:

What are the causes of recurrent mouth ulcers in toddlers?

7 doctors weighed in
Dr. Irwin Berkowitz
Pediatrics
5 doctors agree

In brief: PFAPA

Periodic fever, aphthous stomatitis, pharyngitis and adenitis is a symptom complex of unknown cause that can cause recurrent fevers and sores in the mouth.
The fevers are periodical usually every three to four weeks in younger children. Over time it usually abates. Treatment with steroids or Colchicine may be helpful.

In brief: PFAPA

Periodic fever, aphthous stomatitis, pharyngitis and adenitis is a symptom complex of unknown cause that can cause recurrent fevers and sores in the mouth.
The fevers are periodical usually every three to four weeks in younger children. Over time it usually abates. Treatment with steroids or Colchicine may be helpful.
Dr. Irwin Berkowitz
Dr. Irwin Berkowitz
Thank
Dr. Michael Amster
Pediatrics
1 doctor agrees

In brief: Viral illnesses

Most mouth sores are due to viral infection, such as "hand foot and mouth" disease, or a herpetic infection (herpes i, not the std).
Other viruses can cause an isolated ulcer on the tongue or in the gums. Rarely ulcers can be a sign of an inflammatory disorder but there are usually a number of other symptoms going on. Sometimes the immune system with just cause a random ulcer to appear.

In brief: Viral illnesses

Most mouth sores are due to viral infection, such as "hand foot and mouth" disease, or a herpetic infection (herpes i, not the std).
Other viruses can cause an isolated ulcer on the tongue or in the gums. Rarely ulcers can be a sign of an inflammatory disorder but there are usually a number of other symptoms going on. Sometimes the immune system with just cause a random ulcer to appear.
Dr. Michael Amster
Dr. Michael Amster
Thank
Get help from a real doctor now
Dr. Shontae Buffington
Board Certified, Pediatrics
14 years in practice
872K people helped
Continue
111,000 doctors available
Read more answers from doctors