My 25 year old autisitic son is complaining of a pain on his left side not toward the front or back. it is the 2 to 4ht rib from the bottom. I believe it might be a bubble. He is more comfortable standing as opposed to sitting or lying down. any ideas?
Thanks for asking gone through your question, and understand your concern. If I was your treating doctor, my diagnosis of this pain would be some muscular pain. As you saying it changes with posture of son. I would suggest some painkiller like ibuprofen one tab thrice daily for 5 days after food.  I think there is no big thing to worry hope I answer your question.  Wish you health family life