The primary cause is believed to be an imbalance in sebum (oil) production, leading to an overgrowth of Malassezia yeast, which results in the characteristic symptoms of redness and flakiness. Compared to other types of eczema, the itching associated with seborrheic dermatitis is generally milder and varies from person to person.
The Cause of Seborrheic Dermatitis
What leads to the imbalance in sebum production? While there’s no definitive study pinpointing the exact cause, it is commonly associated with stress—individuals under significant stress, those who suffer from insomnia, or those in a poor mental state are more prone to sebum production imbalance, hence more susceptible to seborrheic dermatitis.
Research also indicates that seasonal factors (such as dry, cold weather), stroke survivors, and individuals with Parkinson’s disease or other neurological disorders are at increased risk. These findings suggest that mental and psychological factors, by compromising immune function, can contribute to the occurrence of seborrheic dermatitis.
Common Areas Affected by Seborrheic Dermatitis
Seborrheic dermatitis predominantly affects areas with high sebaceous activity on the face, such as the sides of the nose, eyebrows, hairline, behind the ears, and the scalp. Although less common, it can also occur on the chest, groin, under the breasts, etc.
When affecting the scalp, seborrheic dermatitis can be mistaken for regular dandruff. However, it is distinguished by red, oily, thick flakes rather than the thin, white flakes of typical dandruff.
Treatment for Seborrheic Dermatitis
Treatment typically falls into three categories:
For acute cases, topical steroid creams are commonly prescribed. If the condition is severe and located on the scalp, shampoo containing tar might be recommended. Mild symptoms can often be managed with non-steroidal anti-inflammatory creams for quick relief. For severe cases, in addition to topical treatments, oral antifungal medications may be prescribed to inhibit the growth of Malassezia yeast.
Preventing Seborrheic Dermatitis
Maintaining a regular daily routine and engaging in stress-relieving activities are fundamental to preventing seborrheic dermatitis. Individuals with oily skin should choose skincare products suitable for their skin type and pay extra attention to facial and scalp hygiene. For hair care, specialized anti-dandruff shampoos can be used as part of regular maintenance. These measures can significantly reduce the risk of developing seborrheic dermatitis and prevent recurrent episodes.
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