Children aged 3 and frequent oral ulcer, what is the reason?

Children aged 3 and frequent oral ulcer, what is the reason?

Question:

Gender: female
Age: 3 1/2 years old
My daughter is 2 years since, oral ulcer, often a large or small piece of time, just right, the other place to sleep again, child spirit is very good, is a mouth ulcers, pain, nutrition appetite, eating is not so good, what reason is this?


Added question 1:(2010-08-29 00:10:29)
A month ago, said the trace element check lead, but is very high, the kiwi fruit granule hospital zinc and calcium and intelligence, we have been in syrup and began to eat, oral ulcer (a recent two months without ulcer), and as before, this isn't the problem, the immune system, the child usual eating more fruit every day XiaoShi patch ", still need to fill some tablets? Thank you for your doctor, eager to!

Treatment:

Hello added vitamin B2, B12, etc. Eat more vegetables,.