Can ne get necrotising fasciitis twice?

Yes unfortunately: Necrotizing fasciitis, a very serious infection of the fascia around muscles, most commonly in the groin, perineum, or abdomen can happen any number of times. It requires surgery to remove the infected tissue and can be very debilitating and is life threatening.

Yes: Be careful! don't wait too long before seeing a general or plastic surgeon.

Sure why not: If there is any consideration ou or anyone you know has it see a doc asap. It is serious and potentially life threatning.