Why are my armpits always itchy?

Why are our armpits always itchy? We may have encountered this phenomenon in our lives. There are many reasons for this phenomenon. Sometimes it may be caused by bacterial infection, or it may be an allergic reaction to a certain substance. The armpit area has sweat glands and sebaceous glands, which secrete a large amount of fluid, so you should pay attention to personal hygiene and wash it frequently. Let's take a closer look at why your armpits are always itchy.

At present, itching and pain are mainly transmitted through a common neural pathway. The feeling of itching and pain is the same mainly because the free nerve endings from the epidermis to the dermis are stimulated and connected to the brain through the reflection of the afferent and efferent nerves.

What causes underarm itching?

The feeling of itching is transmitted through a neural pathway, and the free nerve endings are stimulated, causing itching. The following conditions may cause itching:

1. Taking baths too frequently in winter

The climate is dry in winter, especially in the north. At this time, the secretion of the human body's sebaceous glands and sweat glands decreases, and the sebum film becomes thinner. Some people like to take baths and scrub their bodies frequently in winter. If they use shower gel or soap to wash their bodies, the normal keratinocytes will fall off excessively, and the sebum membrane will become thinner, which will damage the skin barrier function and cause skin itching.

Countermeasures : Bathing should not be too frequent or too long; replenish the body with adequate water after bathing.

2. Poor local hygiene

If you sweat frequently and do not change your clothes or wash your armpits regularly, the skin under your armpits may become moist and itchy.

Countermeasures: When the weather is hot or after exercise, if you sweat, you should take a shower and change your clothes in time.

3. Poor permeability

In hot weather, we sweat a lot. If the clothes are not breathable, the thick sweat may not evaporate and be absorbed by the surface of the skin, causing eczema and armpit itching.

Countermeasures: Wear breathable clothes, eat lighter meals, and reduce the viscosity of sweat.

4. Armpit Hair

Generally, the armpits are more sensitive, and the growth of armpit hair can cause itching. In addition, some women are accustomed to shaving their armpit hair. If the shaving blade is not clean, it will damage the hair follicles and the surface of the skin and cause infection, which in turn causes itching; itching may also occur when the armpit hair grows again.

Countermeasure: Choose a clean razor; it is best to do it while taking a shower. The stimulation of hot water will open the pores, making them relatively clean.

5. Armpit odor causes itching

Underarm odor is caused by excessive secretion of apocrine sweat glands. There are bacteria parasitic in the armpits. The bacteria decompose the sweat secreted by the apocrine sweat glands, which not only produces odor but also causes itching symptoms.

Countermeasures: Starting from the source, you can use some antiperspirant drugs to not only relieve underarm odor but also relieve itching. In addition, minimally invasive laser treatment can also be chosen for axillary odor.

6. Allergies

Sensitive skin is easily irritated and causes skin discomfort. When foreign substances such as certain pathogenic bacteria invade, the skin cannot adapt and will show allergic symptoms such as itching.

Countermeasure: First of all, stay away from allergens. In addition, you should pay attention to diet, increase exercise, and take good care of your skin to enhance skin resistance and prevent it from becoming sensitive skin.