Not sweating?

Growing up I had no problems, but then after I was diagnosed as hyperthyroid 7 years ago, it seems that I don't sweat, no matter how hot I get. I think I got heat exhaustion yesterday from trying to mow the yard. Almost blacked out, nauseous, dry skin, clammy.


What causes this inability to sweat?
Not sweating?
inability to sweathttp://www.mamashealth.com/skin/anhidros...
Not sweating?
Either sweat glands undeveloped or no sweat glands at all. I have a friend who never developed sweat glands and is in danger of dying if she gets to hot. When she's out and about outside she must wear this big icepack that is made to go aroud her neck and shoulders. It seems to work pretty good.
Reply:I will be honest, I don't know much about medical but I have had heat exhaustion and once suffered heat stroke. this happens when you do not have enough fluid in your body and can not sweat to help cool off. I know it sounds weird but it's true. The only thing I can tell you is that to get to a doctor and have yourself checked. he might tell you to go to the hospital and have yourself taken care of. when I had heat exhaustion and heat stroke I could not sweat at all and my temp had gone up to 103. The normal body temp is around 98-99I think. When it hits 105 you run the risk of a major health problem.
Reply:Hyperthyroidism (overactive thyroid gland) is not associated with decreased sweat gland activity; it is associated with increased activity. However, hypothyroidism (underactive thyroid gland) is associated with decreased sweating, known as hypohidrosis. Treatments for hyperthyroidism can lead to hypothyroidism so if this is the cause an adjustment in medication may be neccessary.





You can rule out anhydrotic dysplasia, which causes an absence of sweat glands, because you were normal as a child (anhydrotic dysplasia is a birth defect; it is not a disease which you can develop).





Whatever the cause it can be life threatening as the body must be able to regulate internal temperature through sweating so you should contact your doctor ASAP. .