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I seem to get very itchy all over when my body feels too hot. What could be the cause of this?

2 doctors weighed in
Dr. Geoffrey Rutledge
Internal Medicine
1 doctor agrees

In brief: Heat rash

Sometimes the vasodilation associated with warmth (flushing) can lead to a condition called heat rash, which is caused by release of histamine from the mast cells in the skin.
This causes a itchy, raised rash, sometimes with welts. Symptoms can be controlled with antihistamines such as Benadryl (diphenhydramine). Talk to your doctor if this is troublesome for you.

In brief: Heat rash

Sometimes the vasodilation associated with warmth (flushing) can lead to a condition called heat rash, which is caused by release of histamine from the mast cells in the skin.
This causes a itchy, raised rash, sometimes with welts. Symptoms can be controlled with antihistamines such as Benadryl (diphenhydramine). Talk to your doctor if this is troublesome for you.
Dr. Geoffrey Rutledge
Dr. Geoffrey Rutledge
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