This is Dr. David
I am sorry about your husband.
autoimmune disorders are best treated with steroids like prednisone which can suppress the body's immune system and stop it from attacking itself.
rheumatology doctors are expert at treating autoimmune disorders.
he needs to see a rheumatology doctor and a GI specialist for treatment.
his GP doctor should refer him for this.
it doesn't sound like he has started any steroid therapy yet, correct?