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Acne vulgaris (commonly called acne) is a common skin condition, caused by changes in pilosebaceous units, skin structures consisting of a hair follicle. It is characterized by noninflammatory follicular papules or comedones and by inflammatory papules, pustules, and nodules in its more severe forms.

What are causes of acne? I think many people have not known it yet. So, in this article I try to inform it. Anyway, in general, causes of acne are divided into external factors and internal factors. Below you will find short explanation of every cause.

External Factors to Acne

1. Makeup and skin care products

Comedogenic skin care products can cause irritation or make you break out. These include any products that clog oil ducts. Look for non-comedogenic or non-acnegenic products, but be aware these products can still make you break out.

2. Occupation

Depending on where you work, it is possible that your work environment can cause acne. Such environments include manufacturing or construction facilities where you may come in contact with chemicals or polluting agents that cling to the skin.

3. Too much sun

Evidence shows that another that exposure to sun rays is also one of many acne causes. This can even cause acne a few months after exposure.

4. Climate

Humidity can cause moisture in follicle cells to swell up. On the flip side, dry air can create thick sebum inside follicle cells. Both extremes can ultimately cause acne.

5. Picking and squeezing pimples

Touching your face or using your fingers to pick or squeeze pimples is one of the simpler acne causes that are more from habit. Picking pushes bacteria deeper into the skin cells or spread the bacteria already beneath the surface of the skin.

6. Sweat

Sweat trapped in by your clothing creates an ideal breeding ground for bacteria. Friction caused by leaning on or rubbing the skin or the pressure of bike helmets, backpacks, or tight collars can contribute to or worsen acne.

Internal Factors to Acne

7. Bacteria

Bacteria that typically live on the skin are a contributor to acne. The bacteria known as Propionibacterium acnes are responsible for causing acne. These bacteria create enzymes that dissolve the oil in the skin, and irritate the skin causing inflammation.

8. Sebum production

Generally, there is a relationship between the amount of sebum produced and the severity of acne. The largest sebaceous glands are located on the face, neck, chest, upper back and upper arms.

9. Follicle growth

Sometimes follicle walls will grow abnormally and this can cause acne. As well, increased growth of cells can interfere with the follicles and form a plug. This plug gets bigger until it bursts and spreads bacteria on the surface of the skin.

10. Hormones

Many acne causes come from hormonal change or imbalance. There are hormonal changes during stress, menstruation, pregnancy, stopping/starting birth control pills, menopause, and hormonal disorders.

Androgens: Androgens are produced by the adrenal glands is one of the internal acne causes that stimulate oil glands and oil production. Increased androgen levels leads to more acne.

Stress: Although stress doesn’t directly cause acne, it will aggravate it. This is because stress leads to increased androgen levels, which then affect your sebaceous glands.

11. Diet

Dermatologists still aren’t 100% sure if what we eat affects acne. There exists an ongoing debate among experts about the role of food.

12. Prescription drugs and steroids

Certain drugs, including lithium, barbiturates, and steroids such as for muscle building (androgens) are known to cause acne.

13. Genetics

If your parents had acne, or one of them, there’s a chance you will inherit their complexion. It is now believed that acne can run in the family, but the specific genetic factor has not been discovered.

14. Exposure to certain chemical compounds.

Chloracne is particularly linked to toxic exposure to dioxins, namely Chlorinated dioxins.

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