I have Systemic Sclerosis (no skin involvement- all internal), I also have Sjogrens. After almost 3 years of a permanently sore mouth I have a diagnosis of Mucositis - I do NOT have cancer nor have I had chemotherapy or radiotherapy. Everything I have found so far is that it is caused as a side effect for treatment for cancer. Has anyone else got this problem and if so how do you manage it. Gelclair has been offered as something to use but I see it s expensive to buy. Any suggestions would be welcome.