Summer sensitising

This Summer, the sudden shift from extreme heat to cold can lead to uneasiness in those who are immune-compromised, especially the elderly, or suffering from diseases like diabetes and uncontrolled hypertension.

Also, extra care should be taken of exposed skin and hair as they tend to get dry when exposed to the sun.

Avoid sudden temperature change When one moves from an air-conditioned room to a hot, sweaty atmosphere, there is a feeling of sudden heat and the skin becomes red. The sudden change in temperature can cause heat exhaustion or heat stroke.

Dr Radha Shah, consultant dermatologist at Apollo Hospitals said, “Heat exhaustion causes headache, giddiness, muscle cramps, red, hot skin, and fainting. It can also cause thirstiness, reduced urination and nose bleed. A severe form causes persistent high body temperature, more than 102 C.”

The usual comfortable environmental temperatures are between 22 C to 27 C with relative humidity of 35 to 65 per cent. But the body has a great potential to adapt to climate changes. When exposed to such sudden change the body’s thermostat signals for more blood flow to the skin, causing redness and increases perspiration.

Dr Shah added, “When this happens, the heart pumps more blood, increasing the pulse rate and blood pressure. There is also throbbing headaches with loss of concentration. But if the individual returns to a cool environment these settle down.” The elderly, very young children, obese individuals or those doing heavy workouts are more likely to suffer from these problems.

Excessive sweat causes itchy rashes During summer, sweat production increases to dissipate body heat. Increased sweating, especially in humid places, it leads to miliaria (prickly heat) causing red itchy rashes around the neck, armpits, groin and under the breasts. This problem is found more in people who wear tight dresses and also sweat more.

Dr P.L. Chandravathi, senior consultant dermatologist at Care Hospitals said, “Bacterial infection causing boils are seen more commonly in children and adults with diabetes. They come mainly because of itching and scratching. Fungal infections due to excess sweating are also found.”

Those who suffer from diabetes, hypertension, hypothyroid and heart diseases are more prone to allergies of the sun as their skin is sensitive because of the disease.

Increase in Hair fall During summers there is an increase in hair fall as it becomes very dry and luster less. They also become tangled more because of sweat and breakage. The scalp also gets itchy. The problems of dandruff and psoriasis get aggravated because of sweat. Protection is advised by staying in cool places to decrease sweating. Washing body and hair frequently is important.