How to treat solar dermatitis?

Written by Huang Ling Juan

Dermatology

Updated on June 12, 2025

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For photodermatitis, treatment mainly involves the use of antiallergic medications, and topical application of corticosteroid drugs such as hydrocortisone butyrate cream or fluticasone propionate ointment. If blisters and obvious exudation occur, boric acid solution or saline solution can also be used for wet compresses to reduce exudation. Oral antihistamine medications, such as chlorpheniramine maleate tablets or ketotifen fumarate tablets, can also be used in conjunction with the treatment of photodermatitis, which primarily involves the use of antiallergic and anti-itch medications. Photodermatitis mainly occurs due to excessive exposure to ultraviolet rays, therefore, it is essential to avoid direct sunlight, take sun protection measures when going out, and regularly exercise to boost the body's immune system, which can effectively improve an allergic constitution.

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Written by Xie Ming Feng

Dermatology

1min 20sec

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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.

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Written by Liu Gang

Dermatology

59sec

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How to treat insect bite dermatitis?

Insect bite dermatitis, medically also known as papular urticaria, generally presents with mild symptoms. It appears as a red welt with possible small blisters in the center. This type of dermatitis typically improves with the application of calamine lotion. For severe redness and pain, antiallergic medication such as loratadine can be taken, and topical corticosteroids may be applied. More severe symptoms may include blisters, erosion, and rupture. In such cases, it is advisable to seek treatment at a dermatology department of a formal hospital where the affected area can be cleaned with iodine and treated with infrared therapy, supplemented appropriately with oral traditional Chinese medicine that clears heat and detoxifies, such as Potentilla chinensis anti-inflammatory oral solution.

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Written by Liu Jing

Dermatology

1min 3sec

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Symptoms of dermatitis eczema

Dermatitis and eczema are diseases of the same nature, both classified as hypersensitivity disorders. Their clinical symptoms manifest as pruritic papules and plaques all over the body, accompanied by scaling and varying degrees of itching. The triggering factors are multifaceted, including genetics, environment, metabolism, and more, necessitating the strengthening of skin barrier repair. Daily care is based on moisturizing, recommending the use of medical skincare products such as soft moisturizing creams, and providing symptomatic treatments such as anti-inflammatory and antihistamine to regulate immunity. Medications including oral ebastine tablets, total glucosides of paeony capsules, and tripterygium glycosides tablets, as well as topical tacrolimus ointment, are suggested. (The use of medications should be under the guidance of a physician.)

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Written by Xie Ming Feng

Dermatology

1min 15sec

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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.

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Written by Zhang Yin Xing

Obstetrics

1min 5sec

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How to treat eczema dermatitis in pregnant women?

Pregnant women's eczema is a relatively common disease during pregnancy. Eczema is a rash-like change in the skin that occurs after pregnancy. First, we must exclude a pregnancy-specific disease called cholestasis of pregnancy. Cholestasis of pregnancy primarily manifests as skin itching, starting initially in the palms and soles of the feet and can spread to various parts of the body, with abdominal itching being the most severe. It differs from eczema mainly in that eczema usually involves changes in the skin, but the itching from cholestasis of pregnancy does not show obvious changes on the skin surface. If cholestasis of pregnancy is excluded, we can manage the condition based on the dermatologist's advice. For mild cases, some topical medications, such as calamine lotion, can be used without significant effects on the baby. If the eczema is severe or even affects sleep, sedative medications may be used before bedtime, or some oral antihistamines can help treat the condition. (Please follow the doctor's prescription when taking any medication.)