<s>[INST] I came home from South Africa with mouth blisters- bleeding. They think it is Lichen Planus triggered by Malerone. Bioposy and all blood tests negative. I get blisters on my gums randomly- I have been using Flucisonide which helps but it never gets totally better. Now one dentist prescribed Valtrex. No Pain- just annoying all the time and worried about eating. [/INST] HiWith your query, basically blisters are fluid filled and i hope you re aware of this.Do you have smoking or taking nicotine or other similar products in any form? if so please stop immediately. NICOTINE OR ANY SUCH RELATED PRODUCTS CAUSES CANCER OR CANCERIOUS CONDITIONS. Coming to problem it looks like either pemphigus or herpetic gingivo stomatitis or bullous lichen planus. It is mandatory to rule out the etiology and proper diagnosis by biopsy or FNAC from the blisters before you start  your treatment.Kindly consult your oral medicine specialist. Taking tobacco or nicotine will aggrevate the condition.Hope this is informative </s>