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Heat rash, also known as prickly heat or miliaria, is caused by blocked sweat ducts. The main cause of heat rash is when sweat gets trapped under the skin due to blocked pores.
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Heat rash is most common during hot and humid conditions when sweat production is high. The sweat ducts can become clogged more easily in these environments.
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People who sweat profusely, such as during intense physical activity or in hot climates, are more prone to developing heat rash. The excess sweat can overwhelm the sweat ducts.
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Wearing tight or occlusive clothing can trap sweat against the skin, making it difficult for sweat to evaporate. This constant moisture can lead to heat rash.
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Some synthetic fabrics do not allow for adequate air circulation, trapping sweat against the skin. This can contribute to the development of heat rash.
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Photo Credit: Freepik