Suggest Treatment For Pain Due To Angina Bullosa Haemorrhagica

I have been suffering from oral blood blisters for the last 10 years. I have had 16 since August which tend to flare up in the evenings and are either on or around my tongue or on the roof or insides of my mouth. I have been diagnosed with Angina bullosa haemorighia. But my blood blisters are very big compared to those on line from other sufferers. They also take nearly 3 weeks to heal and are very very painful. I take a steroid wash when they occur and paracetamol for the pain. I am female and 43 yrs old. I am desperate for further help to try and reduce these eruptions or manage this problem. I am beside myself and it makes me feel very down and depressed. Pls could you advise . Many Thanks.