Several aspects of summer — like increased heat and sweating, seasonal allergens, and certain sunscreens — can lead to flare-ups. The good news is you can take a proactive approach to minimizing these risks.
Heat rash develops when a duct that leads from a sweat gland to the surface of the skin is blocked or inflamed. This then blocks the opening of the sweat duct on the surface of the skin (sweat pore). Instead of evaporating, sweat is trapped beneath the skin, causing irritation and bumps on the skin.
Heat rash appears as raised spots that are 2mm to 4mm across. Some spots may be filled with fluid. Heat rash may be harder to see on brown or black skin. The spots may look grey or white.
Hot weather increases water loss from the body, leading to dehydration. This can cause skin to feel irritated, red and dry, so make sure to hydrate your skin and keep water levels topped up. Summer heat tends to mean more sweat, more oil and speedier skin cell production too.
Most of the time, these seasonal breakouts are due to pores becoming clogged by the increased oil and sweat that the skin produces as a reaction to higher temperatures. Heat and humidity create the ideal breeding ground for bacteria, which can get trapped in the clogged pores, resulting in blemishes.
Typically, increased sweat on your skin mixes with bacteria, natural oils, and sunscreen, clogging pores and leading to breakouts. Those with oily and acne-prone skin often experience increased breakouts during summer. Acne is distressing at any age, but excellent treatments are available for this condition.
Heat intolerance causes may include conditions that cause dysautonomia, which affects the autonomic nervous system. They may also have an unusual response to heat, such as intense sweating or anxiety. Heat intolerance is not a disease, but it can be a symptom of an underlying medical condition.
You might have fungal sweat rash if you notice:
A red rash with scaling around the edge. Sore or stinging skin. Itchy or burning skin. Broken skin (in the space between fingers or toes)
coming into contact with an allergen or irritant such as soap, washing detergent, pets, some fabrics, pollen, house-dust mites or certain foods. heat or changes in temperature. skin infections, such as a staph infection. stress.
Body temperature: If you have a high body temperature at night, you could have itchy skin. Dry skin: Your body loses moisture at night, which can make your skin itchy. Hormonal changes: At night, your body doesn't produce as many hormones as it does during the day and certain hormones reduce inflammation (swelling).
For some people, the dry, indoor air of winter causes flare-ups. But for others, it's warmer weather — and the sweating, outdoor allergens, and increased exposure to sunlight — that can ignite a bout of itching, rashes, and other symptoms.
Causes of sun allergy include immune system reactions to sunlight, certain medications and chemicals that make the skin more sensitive to the sun. It isn't clear why some people have a sun allergy and others don't. Inherited traits may play a role.
Autoimmune conditions, such as lupus, can be aggravated by exposure to direct sunlight and UV rays, causing a sudden and severe onset of redness, heat, pain, or swelling. Spending time in the heat can also cause increased fatigue and dehydration, which can worsen joint pain.
You may develop this symptom if you have an anxiety disorder, if you're in menopause, or if you have thyrotoxicosis (when your thyroid gland makes too much thyroid hormone) from any condition, like hyperthyroidism. Other issues and conditions can make you more likely to have heat intolerance.
Our internal body temperature is regulated by a part of our brain called the hypothalamus. The hypothalamus checks our current temperature and compares it with the normal temperature of about 37°C. If our temperature is too low, the hypothalamus makes sure that the body generates and maintains heat.
During the summer, our skin tends to produce more oil. The combination of higher temperatures and humidity can cause sebaceous (oil) glands to work overtime, leading to an increase in oil flow. While this excess oil can give your skin a radiant glow in the summer, it also sets the stage for acne as the seasons change.
Various factors can cause temporary redness, such as sunburn, hot flashes, food sensitivity, a reaction to medication, or skin irritation. Some conditions can also cause redness, such as rosacea, acne, dermatitis, psoriasis, shingles, and lupus.
Heat and Sweat
Hot summer air and sweat can cause ― or aggravate ― certain skin conditions. Acne can worsen in the summer when sweat and face oils mix and clog hair follicles and oil glands.