What causes excessive dandruff?
Nov 29, 2024
Source: Cainiu Health
Dr. Liu Wenmin
Introduction
Dandruff is mainly caused by dry climate, excessive sebum secretion, excessive mental stress, seborrheic dermatitis, psoriasis, and other factors. Under dry climatic conditions, moisture on the scalp surface evaporates more quickly, causing the stratum corneum to lose water, become dry and fragile, and flake off easily, forming dandruff. Use moisturizing shampoo and conditioner to keep the scalp adequately hydrated.
Generally, excessive dandruff is mainly caused by dry climate, excessive sebum secretion, excessive mental stress, seborrheic dermatitis, psoriasis, and other factors. If discomfort occurs, please seek medical attention promptly. Detailed analysis is as follows:
1. Dry Climate
In dry climatic conditions, moisture on the scalp surface evaporates rapidly, causing the stratum corneum to lose moisture, become dry and fragile, and easily shed, forming dandruff. Use moisturizing shampoo and conditioner to maintain appropriate scalp hydration.
2. Excessive Sebum Secretion
Excessive sebaceous gland secretion on the scalp leads to oily scalp, which promotes dandruff formation. Adjust your diet to reduce intake of greasy foods, maintain a healthy lifestyle and sleep schedule, and choose suitable shampoo products.
3. Excessive Mental Stress
Excessive mental stress may cause dysfunction of the sympathetic and parasympathetic nervous systems, disrupt scalp vascular activity, and disturb the keratinization and renewal of scalp cells, resulting in excessive dandruff. Learn to relieve stress, maintain a positive and optimistic attitude, and seek psychological counseling when necessary.
4. Seborrheic Dermatitis
Parasitism and proliferation of microorganisms such as Malassezia species hydrolyze triglycerides in sebum, producing free fatty acids that further irritate the skin, causing inflammatory reactions, resulting in significant flaking on the scalp. Symptoms may include itching and oily hair. It is recommended to use medications such as ketoconazole shampoo, roxithromycin granules, and selenium sulfide shampoo as directed by a physician.
5. Psoriasis
Psoriasis is associated with immune system dysfunction. In patients with psoriasis, the keratinocyte proliferation cycle on the scalp shortens, leading to rapid accumulation of the stratum corneum and formation of large scales. Symptoms may include red patches and scaling on the scalp. It is necessary to use medications such as halometasone cream, mometasone furoate cream, and tretinoin cream as directed by a physician.
Maintain a regular sleep schedule, ensure adequate sleep, and avoid staying up late or overexertion.
