Beware of Prickly Heat this Summer

CHENNAI: Prickly heat is common in hot regions but in a few pittha dominant people, it is found irrespective of the climate. It can develop anywhere on the body, but it most commonly occurs on the face, neck, back, chest and thighs.

It usually appears a few days after exposure to hot temperatures or when a person sweats more than usual, such as during summer.

The rash is made up of tiny spots or bumps that are surrounded by an area of red skin. It is associated with tingling and pricking sensation. It causes the desire to itch constantly.

Pathology

Prickly heat begins with excessive perspiration, usually in a hot, humid environment.

The perspiration makes it easier for dead skin cells and bacteria on the skin to block the sweat glands, forming a barrier and trapping sweat beneath the skin, where it builds up, causing the characteristic bumps.

As the bumps burst and sweat is released, there may be a prickly or stinging sensation.

Causes

• People living in hot climate and who are limited to bed. Here, bed is accumulated more in the underneath areas, causing more friction and heat rashes.
• People with pitta type — their body usually has more warmth and they usually sweat more.
• Even during winter, wearing heavy clothing, even a watch strap, may cause friction with sweating leading to prickly rashes.
• Babies and children are also more at risk of getting prickly heat, because their sweat glands are not fully developed.
• Apart from the external heat and sweating, prickly heat has several other causes such as overwork, liquor, smoking, unhealthy and stressful lifestyle, junk food and side effects of certain medicines.

Siddha correlation: It’s referred to as viyarkuru or venal koppulam.

Tips to prevent prickly heat

• Avoid tight clothing that can irritate the skin. Preferable use cotton and light colored cloths. They prevent sweat accumulation and dry off easily.
• Avoid hot and humid weather. When unavoidable stay in the shade. Use fan, cooler or air-conditioning at a safe distance with a soft air circulation.
• Keep your sleeping area cool and well ventilated.
• Frequent cool showers or cool baths with mild soap or nalunguma can help to prevent heat rash.

 — Dr B Thamizhkkani

(Government Siddha Physician, Tiruchy)