What are the symptoms of prickly heat?

Prickly heat is a common skin disease in summer, so everyone should know more about it so that they can detect and treat it when it occurs. The symptoms of prickly heat are relatively easy to detect because some obvious small red spots will appear on the skin.

Clinical manifestations

According to the difference in sweat gland duct damage and sweat overflow site, it is clinically divided into the following types:

1. Crystalline Miliaria

As the name suggests, they are small blisters as crystal clear as crystal, also known as white prickly heat, which are caused by the overflow of sweat in the stratum corneum or the sweat ducts under the stratum corneum. It is common in patients with high fever, heavy sweating, long-term bed rest, and excessive weakness.

2. Red milia

It is relatively common and can be small papules or papulovesicles with a red halo around them, also known as red prickly heat. The overflow of sweat occurs slightly deeper in the epidermis. Conscious mild burning and itching sensation.

3. Pustular miliaria

Also known as purulent rash. It usually develops from red miliaria, with a needle-sized pustule on the top.

4. Deep Milia

Also known as deep prickly heat, it is caused by the overflow of sweat ducts in the upper dermis, especially at the dermis-epidermis junction. It is common in patients with severe and recurrent episodes of red milia. The skin lesions are densely packed small skin-colored blisters with clear contents that are not easily rubbed, and they increase in size when sweating and decrease in size when not sweating. When the rash is widespread, there may be compensatory increased sweating on the face, armpits, hands and feet, and the function of other sweat glands is basically lost. Sweating on the skin of the whole body is reduced or absent, which can cause tropical ahidrosis or heat exhaustion. The patient may experience systemic symptoms such as weakness, drowsiness, dizziness and headache.