Symptoms of solar dermatitis

Dermatitis is a skin disease in our body, and it is also very common. In addition, there are often many types of dermatitis, and solar dermatitis is one of the more common ones. Many people actually know about solar dermatitis, but it is not ruled out that there are still some people who don’t know about solar dermatitis. In fact, there are many symptoms of solar dermatitis. In many cases, doctors diagnose the disease based on these symptoms of solar dermatitis.

The so-called solar dermatitis is actually caused by strong sunlight exposure, so many people have actually had solar dermatitis, but most of the time people don’t pay attention to it, and the solar dermatitis recovers in a very short time. So, in response to this situation, let’s talk specifically about some symptoms of solar dermatitis.

Solar dermatitis, also known as sunburn or sun spots, is an acute inflammatory reaction of normal skin after exposure to the sun, manifested by erythema, edema, blisters, pigmentation and desquamation. This disease is more common in late spring and early summer, and is prone to occur in children, women, skiers and water workers. The intensity of the reaction is related to light intensity, exposure time, individual skin color, physique, race, etc.

Causes

The action spectrum of this disease is mainly UVB. Ultraviolet radiation causes various cells in the dermis of normal skin to release inflammatory mediators such as histamine, 5-hydroxytryptamine, and kinin, which causes the blood vessels in the dermis to dilate and increase permeability.

Clinical manifestations

In spring and summer, after being exposed to the sun for several hours to more than ten hours, a clearly defined bright red erythema will appear on the exposed area. In severe cases, blisters and erosions may occur. Subsequently, the erythema becomes darker and desquamated, leaving behind pigmentation or reduction in pigmentation. Conscious burning or tingling sensation, often affecting sleep. Mild cases will recover within 2 to 3 days, while severe cases will take about a week to recover. Some patients may also experience conjunctival congestion and eyelid edema. If a wide area is exposed to the sun, it may cause systemic symptoms such as fever, chills, headache, fatigue, nausea and general discomfort, or even palpitations, delirium or shock.

prevention

Regularly participate in outdoor exercise to enhance the skin's tolerance to sunlight; try to avoid outdoor activities or reduce activity time when sunlight is strongest between 10 a.m. and 2 p.m.; avoid sunlight exposure, and take precautions when going out, such as holding an umbrella, wearing a wide-brimmed hat, and wearing long-sleeved clothes; if outdoors, it is recommended to routinely use sunscreen with a sun protection factor (SPF) of 15 or above, and those with severe photosensitivity need to use high-efficiency sunscreen with SPF30 or above.

The common symptoms of solar dermatitis are: erythema, edema, blisters, etc., and some affected areas may also have pigmentation. In fact, there are many more symptoms of solar dermatitis, and what is introduced here is only a small part of the symptoms of solar dermatitis. In addition, in the above introduction, we also discovered the causes and prevention methods of solar dermatitis, which is of great benefit to patients with solar dermatitis.