Definition
Intolerance to heat is the inability to withstand high temperatures or to maintain a satisfactory body temperature; it is associated with the feeling of being overheated, often with profuse sweating.
Warm intolerance is found in hyperthyroidism due to the increase in basal metabolism caused by excess thyroid hormones. This symptom is also found in the menopause (a consequence of the vasomotor instability due to the decrease in estrogen), in multiple sclerosis and in the hypothalamus diseases that cause the alteration of the thermoregulation centers.
Furthermore, heat intolerance can be induced by some drugs, such as amphetamines, anticholinergics and thyroid hormone during replacement therapy. Excessive consumption of caffeine and anhydrosis, or the body's inability to produce sweat, can also contribute to a constant sensation of heat.
Possible Causes * of Heat Intolerance
- Hyperthyroidism
- Menopause
- Graves' disease - Basedow
- Multiple sclerosis
- Thoracic outlet syndrome
- Ehlers-Danlos syndrome
- Prader-Willi syndrome
- Fibromyalgia syndrome
- Subacute thyroiditis
