Few things to say

Hi--
It sounds like maybe your thyroid medicine might need to be adjusted, and maybe they need to go through your psych stuff to see what you need and don't need after they test the rest of your endocrine system and get you straightened out. With hypothyroidism, your thyroid dies slowly and if you havent had it removed, you needs for thyroid medicine will change. Also, it is very important that they test your thyroid antibodies and if they are extremely high, you might want to ask about hashimotos encephalopathy, which can mimic mental illness. I go kookoo when my thyroid or other hormones are messed up. I have been in and out of mental hosp for this thyroid/polyglandular issues and severe untreated pain that just made me nuts.

Since you have parkinsons, do you see a neurologist? You call and talk to them about the mood changes and also about the Hashimotos encephalopathy. If you do a seach on the web on Hashimotos encephalopathy you can find some stuff about it to see if it fits what you have. I don't have parkinsons, but I understand it is very difficult to live with and that the disease and the medicines to treat it can cause a lot of psych type side effects. I'm so sorry that you have these diseases and I feel so much for you, but you are aware that something is wrong with you, even if you don't catch it right away, so that is a good sign. I really hope that you can get this straightened out, you shouldn't have to live with it. I'm not familiar with your meds but you might check to see if this could be a side effect of one of your meds, check with the pharmacist or internet or something. Anyway, calling your neurologist might be a good idea before it gets worse, it could be a warning sign of something coming or that meds are not right. You will be in my thoughts and prayers and I understand so much what you have been through in part, and let me know what you decide to do and what happens.