<prompt> Myringitis bullosa is caused by -Common causes of otitis externa -FungusBacteriaVirus  <response>: Myringitis bullosa hemorrhagica is a painful condition.It is characterized by formation of hemorrhagic blebs on tympanic membrane and deep meatus. It is probably caused by virus or mycoplasma pneumoniaeDhingra 6e, p 62 but according to Turner 10e p 323 