| Subject | Contents |
| Definition | Heat intolerance is the inability to be comfortable when external temperatures rise.
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| Alternative Names | Sensitivity to heat; Intolerance to heat |
| Considerations | Heat intolerance often produces a feeling of being overheated and can produce heavy sweating . Heat intolerance usually comes on slowly and persists long-term. |
| Common Causes | thyrotoxicosis (Excess thyroid hormone increases the basal metabolic rate, which causes body temperature to rise.) amphetamines (such as appetite suppressants) caffeine menopause |
| Home Care | Room temperature should be kept at a comfortable level. Drinking lots of fluids is recommended. |
| Call your health care provider if | Call your health care provider if there is persistent and unexplained heat intolerance. |
| What to expect at your health care provider's office | The medical history will be obtained and a physical examination performed.
Medical history questions documenting heat intolerance in detail may include:
time pattern
Have you had heat intolerance before? Have you always had difficulty tolerating heat? When did you begin to develop heat intolerance? aggravating factors
Is it worse when you exercise ? associated complaints
What other symptoms are present? Especially, is there:
faintingvomitingdizzinesspalpitationsrapid pulse ( heart rate )
Diagnostic tests that may be performed include:
blood studies thyroid studies ( TSH , T3 , Free T4 )
After seeing your health care provider:
You may want to add a diagnosis related to heat intolerance to your personal medical record.
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