I think that JerryMichele answered there for me too. I would press thank you to her but I do not know how she might interpret that Same situation in different version with my sister! Let your brother to feel important...and show him back that you understand his need for that and do not let it to upset you. In a way you are more confident than that! But attract him attention that you do not need him as a specialist in disorders as you have been already diagnosed by less prejudicial minds, but like a brother. If he knows or could comprehend what means that!
You can write here and to me anytime as I have relied on friends more than on family too.