Why do you have dandruff on your head?
Dandruff is a common scalp problem for many people. It not only affects the appearance, but can also cause itching and discomfort. So, why is there dandruff on the head? This article will combine the hot topics and hot content on the Internet in the past 10 days to provide you with a detailed analysis of the causes, types and treatment methods of dandruff.
1. Causes of dandruff

The occurrence of dandruff is related to many factors. The following are some common causes:
| Reason | Specific instructions |
|---|---|
| Malassezia overgrowth | Malassezia is a common scalp fungus. Excessive reproduction can lead to accelerated shedding of the scalp cuticle, causing dandruff. |
| Dry scalp | Dry climate or frequent use of shampoos that are too powerful to remove oil will cause the scalp to be dehydrated and produce fine white flakes. |
| excessive secretion of oil | Excess oil can provide nutrients for Malassezia bacteria and worsen the dandruff problem. |
| Stress and irregular work schedule | Long-term stress or staying up late can disrupt endocrine and affect scalp health. |
| Unbalanced diet | Lack of nutrients such as vitamin B or zinc may lead to abnormal scalp metabolism. |
2. Types of dandruff
Depending on the cause and manifestation, dandruff can be divided into the following types:
| Type | Features |
|---|---|
| dry dandruff | Small, white, easy to fall off, mostly caused by dry or sensitive scalp. |
| oily dandruff | Yellow, greasy, often adhered to the scalp or hair, often related to Malassezia infection. |
| seborrheic dermatitis | Scalp redness, itching, and a lot of dandruff are serious scalp problems. |
3. How to deal with dandruff problem
For different types of dandruff, you can take the following measures:
| method | Applicable type | Specific measures |
|---|---|---|
| Choose the right shampoo | dry/oily | Choose a moisturizing shampoo for dry scalp, and an oil-control shampoo containing ketoconazole or zinc pyrithione for oily scalp. |
| Adjust living habits | all types | Reduce staying up late, relieve stress, and maintain a regular schedule. |
| improve diet | all types | Eat more foods rich in vitamin B and zinc, such as nuts, fish, and green leafy vegetables. |
| Seek medical treatment | seborrheic dermatitis | If dandruff is accompanied by redness, swelling, and severe itching, it is recommended to consult a dermatologist. |
4. Recent hot topics and discussions related to dandruff
According to the hot content on the Internet in the past 10 days, the following are the popular discussions about dandruff:
| topic | heat index | Main content |
|---|---|---|
| “Do silicone-free shampoos really eliminate dandruff?” | high | Netizens are hotly discussing the impact of silicone-free shampoo on dandruff. Some people think it is gentler, but some users have reported that it has limited effect. |
| “What to do if dandruff increases in winter?” | Middle to high | The dry weather in winter causes dandruff problems to worsen, and experts recommend moisturizing more and washing your hair less frequently. |
| "The relationship between dandruff and hair loss" | in | Research shows that long-term severe dandruff may cause folliculitis and indirectly lead to hair loss. |
5. Summary
Although dandruff is common, by understanding the causes, types and scientific solutions, this problem can be effectively improved. If your dandruff problem continues to worsen or is accompanied by other symptoms, it is recommended to seek medical attention promptly to avoid delays in treatment. At the same time, maintaining good living habits and dietary structure is the key to preventing dandruff.
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