Oral problem. I will write more clearly!

Hi, My mother is suffering from unknown disease since 10yrs.A lot of saliva flows from her mouth continuously everyday and so many pimples & swollen structures arise in her mouth almost every month dn goes away her gums  and teeth has become very weak that they are falling off and they always pain.everyday the skin of her lips falls the new skin arises they are very irritating.Her whole face itches a lot and most of the time she is sick.On her tongue long painful lines  come and goes which are painful and she is not able speak cuz of that.we have seen many doctors no body is able to help us.her throat even pains plzz help me May God grant success to the person who helps me. if any of aren't able to understand do tell i will write more clearly