What Causes Soreness In The Navel Area?
May be an umbilical granuloma.
Detailed Answer:
Hi.
Thanks for your query about your 23 year old 200 lbs son.
Noted the history well and understood the concerns.
As per the history you have provided this looks to be an umbilical granuloma that has got infected as the first differential diagnosis.
Less likely to be an umbilical granuloma as this might have caused the abdominal symptoms and signs like pain, distension, nausea, vomiting.
I would advise you to take him to he General Surgeon and get a clinical evaluation, examination to get a confirmed diagnosis and get the treatment done.
If there is associated pain and other symptoms as mentioned, take him to the ER.
I hope this answers your query.
You may please post clear and focused photos as it sometimes help for on-the-spot diagnosis.