This is Kitt. Anxiety and some meds can cause the weight loss as well as combination of disease processess as Lyn mentioned.
Some of the new antidepressants are known for weight gain, sad to say I eat when I am happy and eat when I am sad.
I would see the P-doc first before I see anyone else and try the meds. That is just my opinion.
If you went through 8 hours of tests, I would think you had a pretty good work up. Do you feel you did?
Take care of you and nice to meet you. Keep posting.
Moderator Anxiety ~ Panic Disorders
Dx: Anxiety/Panic, Depression
"If you doubt you can accomplish something, then you can’t accomplish it. You have to have confidence in your ability, and then be tough enough to follow through.”