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Dermatitis
Difference between allergic dermatitis and neurodermatitis
Neurodermatitis is a common chronic inflammatory skin disease characterized by episodic severe itching and lichenoid skin changes. Its causes may be related to various factors including neuropsychiatric factors, diet, local skin irritation, gastrointestinal dysfunction, and endocrine disorders. It commonly occurs in the neck, elbows, knees, sacrococcygeal region, perineum, and around the anus. The lesions are characterized by pinhead- or rice-grain-sized polygonal flat papules, which are pale red, pale brown, or normal skin colored, with a hard and glossy texture. They may be covered with a small amount of scale, and over time, the lesions can merge into large plaques, with the local skin becoming thickened and rough, showing lichenoid changes. Allergic dermatitis is an allergic reaction disease caused by contact with allergens. Its lesions are diverse, which can be erythema, papules, vesicles, swelling, and accompanied by itching. Therefore, localized allergic dermatitis due to improper treatment, lack of timely treatment, or repeated scratching, can develop into neurodermatitis.
What are the symptoms of seborrheic dermatitis?
Seborrheic dermatitis, also known as seborrheic eczema, is a chronic, superficial inflammatory skin disease characterized by papular and scaly inflammation that occurs in areas of sebum secretion. It can be associated with varying degrees of itching and is commonly seen in adults and newborns. The main symptoms include hair follicle papules appearing in areas of sebum secretion such as the scalp, face, chest, and back, which then merge into dark red or yellow-red patches. These patches are covered with greasy scales and crusts, which can lead to exudation, crusting, and erosion, manifesting eczematous changes. In severe cases, the lesions can spread throughout the body, leading to diffuse erythema and significant desquamation. At this stage, it is referred to as seborrheic erythroderma. This condition is chronic and may have recurrent episodes.
Seborrheic dermatitis facial symptoms
Seborrheic dermatitis, also known as seborrheic eczema, is a chronic papular and scaly superficial inflammatory skin disease that occurs in areas where sebum is secreted, and it can be accompanied by itching of varying degrees. The causes of the disease are generally believed to be related to increased sebum secretion or changes in the chemical composition of the sebum. It is also associated with colonization and infection by Malassezia yeast. Factors such as stress, diet, deficiency of B vitamins, and alcohol consumption can also affect the onset and progression of the disease to varying degrees. When seborrheic dermatitis occurs on the face, its symptoms primarily manifest as initial follicular papules that gradually merge and expand into dark red or yellowish-red patches. These patches have oily or dry scales and in severe cases may exhibit exudation, crusting, erosion, presenting eczema-like changes.
Why does seborrheic dermatitis keep recurring?
Seborrheic dermatitis, also known as seborrheic eczema, is a chronic, superficial, papular, scaly inflammatory skin disease that occurs in areas where sebum is excessively secreted, and can be accompanied by varying degrees of itching. The causes of the disease are generally believed to be related to an increase in sebum secretion or changes in the chemical composition of sebum, as well as colonization and infection by Malassezia yeast. Additionally, factors such as mental stress, diet, alcohol consumption, deficiency of B vitamins, fatigue, emotional stress, and infections can all affect the occurrence and development of the disease to varying degrees. Due to the complex causes and numerous triggers of seborrheic dermatitis, it has a chronic course and can recur repeatedly.
What department should I go to for seborrheic dermatitis?
Seborrheic dermatitis, also known as seborrheic eczema, is a chronic, papular, scaly superficial inflammatory skin disease that occurs in areas where sebum is excessively secreted. It is more common in adults and newborns, but can occur at any age. The main symptoms include follicular papules appearing on the scalp, face, chest, and back, which then merge into large, yellowish-red or dark red patches. These patches are covered with greasy scales and crusts, and may be accompanied by exudation, crusting, erosion, and eczema-like changes. In severe cases, it can spread throughout the body, causing diffuse erythema and significant scaling all over, along with varying degrees of itching. This disease is a chronic condition that can recur repeatedly. It is one of the most common diseases in dermatological practice. Therefore, patients with seborrheic dermatitis should consult a dermatologist.
What is seborrheic dermatitis?
Seborrheic dermatitis, also known as seborrheic eczema, is a chronic, papular, scaly, superficial inflammatory skin disease that occurs in areas of sebaceous secretion. It commonly affects the head, face, chest, and back—areas rich in sebaceous glands—and is more frequently observed in adults and newborns. It may be accompanied by varying degrees of itching. The onset of this disease is generally believed to be related to increased sebum secretion or changes in its chemical composition. Additionally, colonization and infection by Malassezia yeast, as well as factors such as stress, diet, deficiency in B vitamins, and alcohol consumption, also variously influence the occurrence and development of the disease.
The difference between neurodermatitis and allergic dermatitis
Neurodermatitis, also known as chronic simple lichen, is a common chronic inflammatory skin disease characterized by paroxysmal severe itching and lichenoid skin changes. Its main causes may be related to various internal and external factors such as neuropsychiatric factors, gastrointestinal dysfunction, endocrine disorders, diet, and local skin irritation. It commonly occurs on the neck, elbows, lumbosacral area, inner thighs, perineum, and around the anus. The skin lesions are characterized by pinpoint or rice grain-sized polygonal flat papules that are pale red, tan, or normal skin color, with a hard and glossy texture. They may be covered with a small amount of scale and, over time, can merge into large plaques, leading to thickened, rough skin with lichenoid changes. Allergic dermatitis is an hypersensitivity reaction skin disease caused by contact with various allergens, characterized by diverse skin lesions such as erythema, papules, vesicles, swelling, and itching, which can occur all over the body. However, localized allergic dermatitis, if treated improperly or not treated in a timely manner, or due to repeated scratching, can potentially develop into neurodermatitis.
What ointment should be used for seborrheic dermatitis?
Seborrheic dermatitis, also known as seborrheic eczema, is a chronic papular scaly superficial inflammatory skin disease that occurs in areas where sebum is secreted. It can be accompanied by varying degrees of itchiness and commonly occurs on the scalp, face, chest, back, and other areas rich in sebaceous glands. The general principle for topical treatment of seborrheic dermatitis involves degreasing, anti-inflammatory, antibacterial, and anti-itching measures. Commonly used topical medications include combined formulations containing corticosteroids and antifungals such as compound ketoconazole and compound econazole. When these are not effective, calcineurin inhibitors such as tacrolimus or pimecrolimus can be used. In cases with exudation and erosion, products like zinc oxide ointment, boric acid zinc oxide menthol cream, and erythromycin eye ointment may be selected.
How to treat symptoms of seborrheic dermatitis?
Seborrheic dermatitis is a chronic papular and scaly superficial inflammatory skin disease that occurs in areas where sebum is secreted. It is often accompanied by varying degrees of itching and commonly affects areas with abundant sebaceous glands, such as the head, face, and trunk. The disease is chronic and may recur periodically. Treatment generally includes three aspects: Firstly, patients should be informed to maintain a regular lifestyle, get sufficient sleep, avoid various mechanical irritations, use less hot water and strongly alkaline soaps for bathing, and pay attention to their diet. They should try to reduce or limit the intake of polysaccharides, alcohol, and spicy foods, while consuming more vegetables and fruits. Secondly, topical medications are used, generally choosing formulations that contain corticosteroids and antifungal agents, such as compound miconazole and compound econazole. If the response is inadequate, calcineurin inhibitors such as tacrolimus and pimecrolimus can be used. Zinc oxide ointment, boric acid and zinc oxide camphor ointment, and erythromycin ointment can be used when there are exuding erosions. If the scalp is affected, shampoos containing ketoconazole or selenium sulfide may be used. Thirdly, oral medication treatments typically include supplementation with B vitamins such as vitamin B2, B6, complex B vitamins, or zinc-containing formulations. For severe itching, antihistamines can be taken orally. Oral itraconazole may be used for fungal infections or widespread lesions. Tetracycline or erythromycin may be used for bacterial infections.
How to Treat Seborrheic Dermatitis
Seborrheic dermatitis, also known as seborrheic eczema, is a chronic papular scaly superficial inflammatory skin disease that occurs in areas with excess sebum secretion. It can be accompanied by varying degrees of itching and typically occurs in areas with abundant sebaceous glands such as the scalp, face, chest, and back. The treatment generally includes three aspects: The first aspect involves advising patients to maintain a regular lifestyle, get sufficient sleep, avoid various mechanical stimuli, use less hot water and soap with high alkalinity for bathing, and pay attention to their diet by limiting and reducing the intake of polysaccharides and fats, alcohol, and spicy and irritating foods, while consuming more fruits and vegetables. The second aspect is the treatment with topical medications. Commonly used medications include mixed preparations containing corticosteroids and antifungal drugs, such as compound miconazole and compound econazole. If the effect is unsatisfactory, topical calcineurin inhibitors such as pimecrolimus or tacrolimus can be used. If there is exudation or erosion, zinc oxide ointment or erythromycin ointment can be chosen. For scalp lesions, shampoos containing ketoconazole or selenium sulfide can be used. The third aspect is the treatment with oral medications, which generally includes supplementation with B vitamins such as vitamin B2, vitamin B6, and compound vitamin B, or zinc-containing preparations. For severe itching, antihistamines can be taken orally. In cases of fungal infection or widespread lesions, oral itraconazole can be administered, and for bacterial infections, tetracycline or erythromycin can be prescribed.