Pemphigus is a disease of severe blisters arising in the skin and Mouth. Sometimes it's very dangerous if not detected early and proper management initiated. Therefore if pemphigus is restricted to Mouth alone then you can take the expert opinion of Oral Medicine specialist.If it has involved the skin also then dermatologist also has to be consulted. The patients in most cases need admission and treatment. You may also Practo consult with records for more information.

Pemphigus is a disease which can have oral and skin presentation. Antibiotics are  not the line of treatment. You should consult an oral medicine  (a specialization in Dentistry) for proper treatment