Hey, we're lucky enough to have at least two reasons for those symptoms!
One is our bipolar disorder,
But the main one is due to the medications we're on. 10 to 1 if you look at the list of side effects on your meds you'll see the symptoms you mentioned.
When they are really serious then the docs can meddle with the dosage or type, nothing we hate more, but its the price we pay...
I have a slight tremor (worse in the morning), pee 80 times a day & night, go to the bathroom more times than a toddler. BUT - my lithium has kept me on an even keel for years now. Ok, until recently but that's a female issue I think.
Also, I have poor concentration, poor short-term memory, forget what I'm in the middle of, and basically have what you so truly describe as "a bad case of the stupids".
I'm so glad you wrote in! I had forgotten that I have lots of company out there!!