Son started enbrel (etanercept) for severe ankylosing spondilitis. Days after still talking about feeling very hot, and all of his nerves tingling. Is he safe?

Complex issue. Enbrel (etanercept) is a very potent medication. It has many benefits for autoimmune disorders, but it also has many side effects. The only real answer is the weigh the balance between benefits and side effects over time. If the benefits outweigh the side effects, it is good for the patient. If the side effects outweigh the benefits, it may not be worth the risk.