I have fibre muscular dysplasia is this caused by taking the drug elmiron (pentosan) for ten years i take it for interstitial cystitis ?

Here are some ...: It's natural to relate "new" health event with prior drug use. However, your clinical scenario showed you have suffered from multiple similar connective tissue-related conditions resulting from still much unknown causes. Besides, a 10-yr span has incurred much change in the body. So, it's hard to connect Elmira with fibromuscular dysplasia, which has been known to occur more in women.