My arms itch when the sun shines on them in summer

When you go out in the summer, your skin will feel itchy when exposed to the harsh ultraviolet rays. You must be careful with this symptom as it may be caused by solar dermatitis. When you stop, you need to find a suitable method to slowly regulate your condition. Generally, solar dermatitis may be related to contact dermatitis. You need to pay attention to maintenance first, take preventive measures against the sun when going out, and try not to go out when it is hot.

Pathological etiology

Most of the sunlight is composed of visible light, and the spectrum range is about 390 ~ 770nm. In addition to its ability to stimulate the retina, it also has some biological activity. Above 770nm is infrared, which is invisible heat that can make the skin red. The ultraviolet light below 390nm causes this disease. It is the 290-320nm medium-wave ultraviolet light that causes this disease. The degree of skin reaction varies with the exposure time, range, environmental factors and skin color. Heat can increase the body's sensitivity to ultraviolet rays. The onset of this disease is also related to personal susceptibility. It is more common in spring to early summer. Plateau residents, snow exploration or water surface evil people have a higher incidence of the disease.

Disease diagnosis

This disease needs to be differentiated from contact dermatitis and niacin deficiency. Contact dermatitis: There is a history of contact with irritants, which is unrelated to sun exposure and can occur in any season. The rash occurs at the contact site and is painful and itchy. Niacin deficiency: In addition to sun exposure, there are also rashes on non-exposed sites, often accompanied by symptoms of the nervous system and digestive system.

Inspection method

Skin examination may reveal erythema with clear boundaries on the irradiated skin. In severe cases, edema may occur, reaching a peak within 12-24 hours, accompanied by local burning or stinging pain, and some may experience local itching.

complication

The most common late complications are secondary infection, macular hyperpigmentation, and a prickly heat rash. The skin becomes more susceptible to sun damage for one to several weeks after scaling.

Diet and health care

Cucumber Juice

You can apply cucumber juice on the painful skin for about 10 minutes. The coolness will penetrate the skin and the pain will naturally subside. After applying, rinse your body with water

Aloe Vera Protein

Aloe vera has the natural effect of removing blood stasis and reducing inflammation. Applying the pulp of aloe vera on the skin has analgesic and skin-beautifying effects. If you mix aloe vera with egg white and honey, you can use it as a facial mask. The paste has stronger strength and will not drip. The entire facial mask process takes about 15 to 30 minutes, then wash your face with water.

Watermelon Rind Honey

Some people use watermelon rind to make soup, which has a refreshing effect. After exposure to the sun, you can mash watermelon rind into juice, add honey to make a facial mask, or apply it to the injured area. It can also reduce the swelling, pain and peeling of sunburned skin.

Tomato and kiwi

In addition to external application, you can also squeeze tomato and kiwi juice and drink it to cool down and eliminate dryness and heat. These two fruits and vegetables are rich in vitamin C and have oxidative components that can whiten the skin. In addition, the moisture in fruits and vegetables can replenish the moisture lost by the skin after exposure to the sun and restore the elasticity of the skin.