How come i have interstitial cystitis, but nobody else in the family has it?

Unknown: Interstitial cystitis (ic) also called painful bladder syndrome (pbs) is common but causes are unclear, & likely there are many different causes. Treatments include medication by mouth or instilled into bladder, neuromodulation (estim) or treatment of hypertonic (spastic) pelvic muscles with pt, medication or injections.

Often Not familial: Probably because of your diet stress and healing abilities.