Health-related factors that may increase the risk of hyperthermia include:

• Pre-existing diseases such as congestive heart failure, diabetes and chronic obstructivepulmonary disease• Decreased ability to move around• Dementia or cognitive impairment• Certain medications that may cause dehydration or that may affect the responses to heat by the heart, blood vessels or sweat glands.• Being substantially overweight• Drinking alcoholic beverages• Being dehydrated• Age-related changes in the skin, such as decreased functioning of small blood vesselsand sweat glandsSource: National Institutes of Health