 [ Symptoms ] my son is 23 yrs old he is underweight tonight he fell unconscious i am asking for advice and assistance please my son is 23 yrs old he is underweight tonight he fell unconscious i am asking for advice and assistance please [ Disease ] the only advice that i can give you is to have your son see a medical professional someone who can take a detailed medical history perform an examination and order some essential diagnostic tests there is really nothing that can be done blindly over the internet to get to the bottom of this complex issue as a concerned parent see that it happens