causes of painful mouth :

'I MISS '

I (idiopathic)

M (miscellaneous)
-------Trauma
-------Leukoplakia

I (infection)
-------Fungal >>> candida
-------Viral >>> HSV, coxsackie A

S (systemic disorder)
-------Food : Iron, folate, vit B12 def
-------GIT : IBD, celiac, Behcet
-------Blood : Leukemia, leucopenia

S (skin disorder)
-------Lichen planus
-------Erythema multiform
-------pemphigus

( shared by Mohammed Abdul-Wahab Bohlayem )