Go for it Bex. Cat's Claw is a great herb. It saved my girlfriend's life.

My girlfriend has Escleroderma and 12 years ago doctors told her she was going to die. At one point we thought she was going to die too. She found a Holistic Healer that urged her to stop the medication she was taking and instructed her to take Cat's Claw. When she talked with her doctor about it, he said,
"You either follow my treatment or that hocus pocus." She left his office with her mind made up. She stopped taking the medications.
A friend of her family from the high sierra in her country, Venezuela, brought her the real bark. She changed her nutrition habits and drinks the tea from that bark. Makes it and drinks it in her daily water. She is still alive, working and as pain free as the weather allows it. She suffers some pain during the winter months and feels so much better during the summer months. Funny how her insurance paid thousands of dollars and she has managed to live with something that is so totally inexpensive.

I do hope it works for you, because to me, your problem sounds as mysterious as hers.

Remember that if your immune system is weak, watch out for allergies.