I'm getting tested for hypothyroidism today after my shift is over because I've been suffering from constant fatigue, weight gain, and I'm always cold. It's 75 degrees at work and my legs/hands are painfully cold along with having the chills. I also have other symptoms, but is there a link between hypothyroidism and bipolar? I noticed a few people here have both and I was wondering if this disease affects mania since I read it affects mood. Any information would be very helpful