I have had a severe allergic reaction from taking tegretol 100mg.after 9 daysa rash appeared, and spread from head to toe with a itchy burning feeling. saw g.p. who gave me son anti drugs like piritons ,been taking over a week now, tonight getting ready for bed my husband found 2 massive bruises each side of my back, can this be dangerous,they tender to touch.but don t get pain with them,