What causes protruding belly button?
Patient: I am a male, 33 years old with no known health issues.  I am in decent shape and not overweight but my belly button has been protruding more and more over the last year or so.  I once had an inny but half of it is now an outy.  Any idea what could be the reason for this? Doctor: Hello,  It can be due to hernia or infection. Doing an ultrasound abdomen help to diagnose the cause. Share a picture for better understanding.  Hope I have answered your query. Let me know if I can assist you further.  Take care  Regards, Dr S.R.Raveendran, Sexologist