My Son Suffers From Various Problems. He Has Had An

Question: My son suffers from various problems. he has had an anxiety disorder since he was 20. he is 50. he has torn ligaments in his right knee and is being treated by an accupuncturist but does still suffer from severe pain daily. Not all day- there are good days and bad. he also suffers from hyperparathyroidism and takes vitamin d prescribed by his endocrinologist. the doctor says his hormone level is good and his calcium is good. He has seen a cardiologist regulaaarly and has been told hiis heart is fine (blood test, ekg, ultrasound etc. He is suffering lately from severe stomach cramps. he has been diagnosed with ibs and takes metamucil to control inflammation. He has had blood in his stool of and on. the metamucil controls it when he decides to take it daily. he has a 18 year old special needs son and lately the boy has been sick so he is losing sleep taking care of him. he sleeps maybe 2 or 3 hours a night. there are so many things going wrong all of a sudden that his anxiety is at a 1000 %. He has dental pain, the cramps, and suddenly the cramps will kick in sometimes not just his stomach but his legs also. the bottom of his foot will go numb occasionally. He is stressed by his health, his son's condition,conservatorship coming up in july. He is a mess. and i can't help him. help me help him. what doctor does he go see now?