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Why does my skin on my chest and shoulders itch when I get hot or sweat?

2 doctors weighed in
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In brief: ?Prickly heat

It is possible that what you are describing is also called "prickly heat".
It is also known as miliaria rubra. This is when the pores in the skin become blocked and sweat cannot come out easily. This can cause itching and sometimes red bumps. The problem usually gets better when you have cooled off. Based on your brief description this would be my first thought.

In brief: ?Prickly heat

It is possible that what you are describing is also called "prickly heat".
It is also known as miliaria rubra. This is when the pores in the skin become blocked and sweat cannot come out easily. This can cause itching and sometimes red bumps. The problem usually gets better when you have cooled off. Based on your brief description this would be my first thought.
Dr. Donald Shenenberger
Dr. Donald Shenenberger
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