My mother has been suffering from Erythema Nodosum for past 2 and half years. Only the first time it was severe , but later ones were painless and no harm. Can I know why this is occuring .
Ra factor - negative
Biopsy - founded EN
ESR - above 30
All other blodd tests - CBC, Creatine, blood sugar , lipid profile etc are normal.
Can i please know what more should be tested, is this harmful or a comman illness.