These sound like aphthous ulcers whose cause is unknown. I am surprised that he does not have a little bit of pain. Usually these become less of a problem with time and there is no treatment other than pain relief. Do NOT use aspirin or Bonjela, which also contains an aspirin-like substance. I presume that your son is otherwise well when he has these ulcers. If he is indeed unwell then he should see a doctor for diagnosis and management, as I can think of 10 or so causes for mouth ulcers. One possibility is an allergic cause. If so they would usually occur at a particular time of the year or exposure to certain substances.
However, aphthous ulcers are by far the most likely cause and they do no harm and disappear with increasing age.
On 10/8/2012 5:37 PM, maha khan wrote:
Hi there, my 6 years old son has mouth ulcer he has 4 time this , almost every year he has . we do not know why it happen ? first time he had very severe mouth ulcer but now he has painless ulcer please help me why its happen with him every year , being a mother its painful for me to see my son like this please please help me please .