hypothyroidism, after thyroid removal
"Levothyroxine 50mcg was prescribed. First time user. First day took only half. By mid day I felt hyperactive. Had difficulty falling asleep at night. 
2nd day took 1 tab. Still felt overactive for the day. Still insomnia 
3rd, 4th, 5th day heat intolerance set in. I had the airconditioner on all day and all night. 
6th day, all were felt and at about 7pm severe headache was felt while at a party. 
Headache was so severe it felt like the pressure on my head was going to bust off my head. Cooled off by putting ice on my face which also made my glands swell, did not lower the pressure on my head. 
Took blood pressure reading when I got home. It was very high. 
I have never felt such  pressure headache before in my life nor high blood pressure reading."