Rain,
It is very important that you know that anxiety most definately IS a symptom of HYPOTHYROIDISM, not just HYPER. I hope you read this, because its really important you know that it is one of the BIGGEST symptoms.. also, your brain fog, confusion, inability to concentrate and exhaustion will also naturally cause ANXIETY - which all stems from hypothyroidism - are you on medication now? please note it can take 6 months to a year for the brain fog or 'depersonalization' to lift after starting meds.. also if the normal synthroid meds don't work you may respond to a natural dissected thyroid - or need something to help you absorb your synthroid meds.. Also, if your hyothyroid, which you are, the following are ways you can help your meds work effectively..
1. Take them every day at the same time on a completely empty tummy, no eating for an hour
2. Take B12 vitamin D, vitamin E daily
3. Avoid Gluten if possible, CUT WAY DOWN ON SUGAR, kill caffeine and monitor alcohol consumption.
Now here are the tests you absolutely must get:
TSH
Free T3
Free T4
Reverse T3 (Not all practitioners test this, ask)
For Hashimoto's disease - Thyroid Peroxidase Antibodies (TPOAb), Thyroglobulin Antibodies (TgAb)
For Graves' disease - Thyroid Receptor Antibodies (TRAb), Thyroid Stimulating Immunoglobulins (TSI)
Iron
Ferritin
TIBC (Total Iron Binding Capacity)
Iron Sat
Vit D
Vit B12
Adrenals (8-9 AM serum cortisol test at the minimum - 4-5pm testing is helpful also, as it gives an idea of what your cortisol output is in the morning, and then later in the afternoon/evening,- 24 hr. saliva cortisol test at best)
Reproductive Hormones (If you are a woman who is still menstruating, the reproductive hormones should be tested 19 to 21 days past the first day of your last period)
**If your iron, ferritin, Vit D, Vit B12 are too low, you may have trouble with thyroid hormone replacement. They need to be in optimal ranges for your body to tolerate and utilize thyroid hormone properly. Low or high cortisol (adrenal hormone) can present a problem as well. Cortisol levels should be at the highest when you wake in the morning and gradually come down throughout the day, with the lowest level between 10 and midnight. An 8-9am and 4-5pm serum cortisol test is recommended. A 24 hour saliva cortisol test is even better. Reproductive hormones also need to be balanced. Thyroid, Adrenal and Reproductive hormones all go hand in hand. When one is out of balance, it can throw the others out of balance.**
I know because I have been through this. Much love and good luck your way!