Heat intolerance can affect anyone and often has both physical and medical causes.
Below you’ll find an overview of the most common symptoms, causes, diagnosis, treatment options, and how to prevent this condition from becoming dangerous.
Symptoms you should watch for
Heat intolerance can show up differently in each person.
Typical signs include headaches, a rapid heartbeat, nausea, fatigue, muscle cramps, mood changes, and either excessive sweating or the inability to sweat.
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Possible health-related causes
Several medical conditions may be behind heat intolerance.
Anxiety disorders, menopause, or an overactive thyroid (thyrotoxicosis) can all interfere with the body’s ability to regulate temperature.
Conditions that increase the risk
Graves’ disease, multiple sclerosis, heart disease, diabetes, obesity, and high blood pressure are all linked to a higher likelihood of experiencing heat intolerance.
Medications that can trigger heat intolerance
Certain drugs may make it harder for your body to cope with heat.
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These include antidepressants, antibiotics, blood pressure medications, antipsychotics, and drugs for allergies or diabetes.
The role of substances and alcohol
Not just prescribed medications, but also substances such as opioids, cocaine, methamphetamines, and alcohol use can trigger heat intolerance or worsen existing symptoms.
Why age makes a difference
According to the CDC, people over 65 are more vulnerable.
Older adults don’t adjust to temperature changes as well as younger people, and they’re also more likely to have chronic health conditions or take medications that affect heat regulation.
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How doctors diagnose it
To find the cause, doctors begin by reviewing your medical history and performing a physical exam.
They may also order blood work and thyroid tests to pinpoint the underlying issue.
Treatment depends on the cause
Once the reason behind your heat intolerance is identified, treatment can be tailored.
This might involve adjusting medications, treating an underlying disease, or making lifestyle changes.
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Potential complications
If untreated, heat intolerance can escalate to heat stroke, where the body’s core temperature reaches 104°F (40°C) or higher.
This is a medical emergency that can cause permanent organ or brain damage and can even be fatal.
Everyday prevention tips
You can lower your risk by keeping indoor temperatures comfortable, staying hydrated, and limiting activity in hot and humid conditions.
Workplaces can also monitor employees’ body responses to heat, such as heart rate, skin temperature, and sweating levels, to prevent dangerous situations.
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This article is based on information from WebMD.com.