Subscribe
Seborrheic Dermatitis
Is seborrheic dermatitis itchy?
Seborrheic dermatitis, also known as seborrheic eczema, is a chronic papular scaly superficial inflammatory skin disease that occurs in areas of excessive sebum secretion. It is commonly found in areas rich in sebaceous glands, such as the head, face, and trunk. The characteristic skin lesions primarily consist of follicular papules that gradually merge into dark red or yellow-red patches, covered with greasy scales or crusts. There may be exudation, crusting, erosion, and eczematous changes. In severe cases, it can spread over the entire body, causing diffuse erythema and significant scaling. The condition may be accompanied by varying degrees of itching.
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.
The difference between tinea capitis and seborrheic dermatitis
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.