The difference between tinea capitis and seborrheic dermatitis

Written by Zhu Zhu
Dermatology
Updated on September 05, 2024
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Tinea capitis and seborrheic dermatitis are both skin diseases, but they are very different.

Firstly, the types of fungi that cause tinea capitis and seborrheic dermatitis are different. Tinea capitis is mainly caused by fungi such as Trichophyton violaceum and Trichophyton tonsurans, whereas seborrheic dermatitis is predominantly caused by Malassezia.

Secondly, their clinical manifestations are also different. The clinical manifestations of seborrheic dermatitis are often less severe than those of tinea capitis.

Finally, tinea capitis often does not heal by itself and requires professional treatment, while seborrheic dermatitis can heal on its own, but tends to recur frequently.

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Written by Xie Ming Feng
Dermatology
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Manifestations of seborrheic dermatitis

Seborrheic dermatitis, also known as seborrheic eczema, is a chronic papular and scaly superficial inflammatory skin disease that occurs in areas of sebaceous secretion. It may be accompanied by varying degrees of itching. It commonly affects areas rich in sebaceous glands such as the head, face, chest, and back. Initially, the skin lesions are follicular papules, which gradually merge into dark red or yellow-red plaques. These are covered with greasy scales or crusts, and might exhibit exudation, crusting, and erosion, showing eczematous changes. In severe cases, the lesions may become widespread throughout the body, with the skin appearing diffusely flushed and significantly flaky. This condition is then referred to as seborrheic erythroderma. The disease is chronic and recurrent.

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Written by Xie Ming Feng
Dermatology
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Can people with seborrheic dermatitis eat eggs?

Seborrheic dermatitis is a chronic papular and scaly superficial inflammatory skin disease that occurs in areas where sebum is secreted, and may be accompanied by varying degrees of itching. The causes of this disease are generally believed to be related to increased sebum secretion or changes in its chemical composition, as well as colonization and infection by Malassezia. Additionally, factors such as mental stress, diet, alcohol consumption, deficiency in B vitamins, emotional tension, fatigue, and infections can all affect the occurrence and development of the disease to varying degrees. Therefore, clinically, patients are generally advised to limit their intake of polysaccharides and fats, avoid spicy and irritating foods, abstain from alcohol, and eat more vegetables and fruits. As for eggs, we can eat them with confidence.

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Written by Xie Ming Feng
Dermatology
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Seborrheic dermatitis is caused by what?

Seborrheic dermatitis, also known as seborrheic eczema, is a chronic papular squamous superficial inflammatory skin disease that occurs in areas with excessive sebum secretion. It can be accompanied by varying degrees of itching and is commonly found on the scalp, face, chest, and back where sebaceous glands are abundant. Both adults and newborns are frequently affected. The exact causes of this condition are not yet fully understood. Currently, it is generally believed to be related to an increase in sebum secretion or changes in its chemical composition. Additionally, colonization and infection by Malassezia fungi, along with factors such as stress, diet, vitamin B group deficiency, and alcohol consumption, can all influence the occurrence and development of this disease to varying degrees.

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Written by Xie Ming Feng
Dermatology
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What should pregnant women do about seborrheic dermatitis?

Seborrheic dermatitis is a chronic papular and squamous superficial inflammatory skin disease that occurs in areas where sebum is secreted, and it can be accompanied by varying degrees of itching. Pregnant women diagnosed with seborrheic dermatitis are generally treated primarily with topical medications. It is advisable to choose mild, safe ointments with low irritability for external application. Safe antibiotic ointments, traditional Chinese medicine ointments, or ointments primarily for moisturizing and repairing the skin barrier can be used. Specific medications should be used under the guidance of a doctor. Additionally, pregnant women should be informed to maintain a regular lifestyle, get enough sleep, limit diets high in polysaccharides and fats, avoid spicy and irritating foods, eat more vegetables and fruits, avoid various forms of mechanical irritation, and use less hot water and strongly alkaline soaps for bathing.

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Written by Huang Ling Juan
Dermatology
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Seborrheic dermatitis causes

The causes of seborrheic dermatitis are multifaceted. Typically, if one does not pay attention to their diet, consuming spicy, irritating, or overly greasy foods can easily lead to the occurrence of seborrheic dermatitis. Seborrheic dermatitis can also occur when there is excessive secretion of male hormones, which leads to overactive sebaceous glands. Additionally, some metabolic disorders and genetic factors are also related to the onset of seborrheic dermatitis. Furthermore, seborrheic dermatitis can be associated with a deficiency in B vitamins, as well as physical and chemical irritants. Frequent scratching of the skin or the use of overly alkaline facial cleansers can promote the occurrence and exacerbation of seborrheic dermatitis. Psychological factors can also lead to the occurrence of seborrheic dermatitis; excessive stress, anxiety, and depression can all trigger the condition.