Q&A with Top Doctors

How many days does it usually take for a skin allergy to heal?

In general, the recovery time for skin allergies varies from person to person. Mild symptoms may resolve in 3–7 days, while more severe symptoms might require 1–2 weeks or even longer to heal. Detailed explanations are as follows:

If allergy symptoms are mild, such as localized redness, rashes, and slight itching, and the patient has a strong immune system, symptoms typically subside gradually within 3–7 days after removing the allergen. For example, minor allergies caused by brief exposure to pollen usually improve quickly.

However, if symptoms are severe—such as widespread redness, swelling, blisters, or even systemic symptoms like fever and difficulty breathing—the recovery period may be prolonged, possibly requiring 1–2 weeks or longer. Serious drug allergies, for example, can trigger systemic reactions that take more time to resolve. Additionally, if the allergen remains present, symptoms may recur repeatedly, further prolonging the recovery period.

During the allergic period, maintaining skin cleanliness is important, but excessive washing should be avoided. Refrain from using irritating cleansers or skincare products. Do not scratch when experiencing itching, to prevent worsening symptoms or causing infections. A light diet rich in fruits and vegetables is recommended, while spicy foods, oily dishes, seafood, and other easily allergenic foods should be avoided.

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Dr. Liu Wenmin
May 30, 2025
Will skin allergies causing redness and itching heal on their own?

In general, if allergic symptoms are mild, they may resolve on their own; however, if symptoms are severe, they may not self-resolve. Detailed explanations are as follows:

If allergic symptoms are mild, such as slight redness and itching on localized areas of the skin, and the allergen has already been removed, the skin allergy symptoms may resolve spontaneously. The body's self-repair mechanisms can manage this small-scale inflammatory response by metabolizing inflammatory mediators and repairing the damaged skin barrier.

If the skin develops dense red papules, extensive patches of erythema, and significant itching, such more severe allergic reactions typically will not resolve on their own and require prompt medical attention for professional diagnosis and treatment.

Firstly, identify and avoid the allergen causing the skin allergy as soon as possible. For example, if it is caused by cosmetics, discontinue use immediately; if caused by food, avoid consuming that food again.

Keep the skin clean, but avoid excessive washing to prevent damage to the skin barrier. Mild, non-irritating moisturizing products can be used to relieve dryness and itching. Additionally, avoid scratching the affected areas to prevent infection or worsening of symptoms.

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Dr. Liu Wenmin
May 30, 2025
Can face masks help remove acne marks?

In general, applying face masks can assist in lightening acne marks to some extent, but they are unlikely to remove them completely, and comprehensive treatment combining other methods is required.

The effectiveness of face masks in lightening acne marks mainly depends on their ingredients and functions. Masks containing specific ingredients, such as niacinamide, vitamin C, arbutin, or hyaluronic acid, may help reduce pigmentation, moisturize the skin, or promote skin repair, thereby improving acne marks to some extent. Medical masks may also have anti-inflammatory effects, reduce swelling, and promote wound healing, which can aid in diminishing acne marks.

However, the effectiveness of face masks in lightening acne marks is limited and varies from person to person. Acne marks are caused by complex factors, including tissue damage from inflammatory acne and melanin deposition. Simply using face masks is unlikely to completely eliminate acne marks. More severe acne marks may require professional treatments such as laser therapy or chemical peels.

When selecting face masks, it is important to choose products suitable for one's skin type to avoid worsening skin issues due to improper use. Furthermore, applying face masks is only an auxiliary method in the process of treating acne marks; it should be combined with good lifestyle habits, skin cleansing, and other skincare measures for comprehensive skin care and treatment.

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Dr. Liu Wenmin
May 30, 2025
What are the types and symptoms of skin diseases?

There are many types of skin diseases, commonly including eczema, dermatitis, psoriasis, acne, urticaria, and fungal infections. Each skin condition presents with specific symptoms. For example, eczema typically manifests as redness, swelling, itching, and oozing of the skin; dermatitis may be accompanied by erythema, edema, and pain; psoriasis is characterized by silvery-white scales and red patches on the skin; acne mainly presents with clogged pores and inflammatory papules; urticaria rapidly develops into wheals on the skin, accompanied by intense itching; fungal infections may cause skin peeling, redness, and ring-shaped patches. These symptoms may vary among individuals but are usually associated with varying degrees of discomfort.

If abnormalities appear on the skin, it is advisable to avoid scratching the affected area to prevent infection and worsening of symptoms. Keep the skin clean and dry, and choose mild, non-irritating cleansing products. Avoid using cosmetics or skincare products that may cause allergic reactions. Wear loose, breathable clothing to reduce skin friction. If symptoms persist or worsen, seek medical attention promptly. Dermatologists will prescribe appropriate medications, such as hydrocortisone cream or desonide cream, based on individual conditions. Additionally, doctors may recommend skin examinations to confirm diagnosis and formulate personalized treatment plans.

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Dr. Liu Wenmin
May 30, 2025
What are the symptoms of mites on the skin?

Skin symptoms caused by mites mainly include itching, rashes, papules, and rough skin. Mites are tiny parasites commonly found in hair follicles and sebaceous glands of human skin. Their activities and excretions can irritate the skin and trigger inflammatory reactions. Therefore, skin affected by mite infestation will exhibit noticeable discomfort and visible abnormalities. These symptoms may become more pronounced at night because mites are more active during this time.

If you suspect a mite infestation, it is recommended to keep your face clean and wash your skin daily with a gentle cleanser, avoiding oily or strongly irritating skincare products. Regularly wash pillowcases, bed sheets, and towels using hot water to kill mites. Skincare products containing anti-mite ingredients, such as tea tree oil, may be used, as these ingredients can help inhibit mites. If symptoms persist or worsen, seek medical attention promptly. A dermatologist may prescribe medications such as hydrocortisone cream or desonide cream. With comprehensive care and treatment, skin problems caused by mites can be effectively alleviated.

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Dr. Liu Wenmin
May 30, 2025
Is surgery always necessary for gallstones?

In general, surgery is not always necessary for gallstones. Smaller stones usually can be managed without immediate surgery; however, larger stones may require surgical intervention. Patients should seek timely medical care, and the decision regarding surgery should be made by a physician based on a comprehensive evaluation of the patient's condition. Self-assessment regarding the need for surgery is not recommended. The analysis is as follows:

If the stones are small, for example less than 2 cm in size, and the patient experiences mild or no abdominal pain, surgery typically is not required. In such cases, the stones may have minimal impact on gallbladder function, and the condition can potentially be managed through conservative treatment and medication.

However, if the stones are large—greater than 2 cm—or if there are multiple stones, and symptoms such as biliary colic, jaundice, or fever persist or worsen, or if tests reveal significant thickening of the gallbladder wall, calcification of the gallbladder wall, surgery should be actively considered. Larger stones are more likely to cause obstruction, leading to complications such as cholecystitis, cholangitis, or common bile duct stones. These complications can cause severe inflammation and infection, even posing a risk to life.

Patients with asymptomatic or mildly symptomatic gallstones may control their condition by adjusting lifestyle and dietary habits, such as maintaining regular meal patterns, avoiding overeating, reducing intake of high-fat and high-cholesterol foods, and increasing dietary fiber consumption.

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Dr. Gao Jun
May 30, 2025
What are the methods for skincare during pregnancy?

Skin care for pregnant women mainly focuses on moisturizing, preventing stretch marks, and selecting safe skin care products. During pregnancy, hormonal changes can make the skin more sensitive and fragile, increasing the likelihood of problems such as dryness, itching, and stretch marks. Therefore, pregnant women need to pay special attention to skin care, choosing gentle, non-irritating products and maintaining healthy lifestyle habits to support skin health.

Skin care measures mainly include keeping the skin adequately hydrated by applying moisturizing cream multiple times daily, especially after bathing, to lock in moisture promptly. Choose skin care products with natural ingredients and avoid those containing chemical additives, fragrances, and alcohol, as these components may irritate the skin. Regarding diet, consume more foods rich in vitamins C and E, such as fruits, vegetables, and nuts, as these nutrients aid in skin repair and provide antioxidant benefits. Maintain moderate physical activity to promote blood circulation, which can improve skin condition. If serious skin problems occur, such as severe itching or extensive stretch marks, consult a doctor promptly for professional advice and treatment.

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Dr. Liu Wenmin
May 30, 2025
Can patients with pancreatitis drink milk?

Generally, whether patients with pancreatitis can drink milk should be determined according to the stage of their condition. Drinking milk is not recommended during acute episodes; however, moderate milk consumption may be acceptable during the recovery phase. It is important to follow professional medical advice and consider individual health status and disease progression comprehensively. Detailed analysis is as follows:

From the perspective of condition management, patients experiencing acute flare-ups must fast (no food or water) to allow the pancreas sufficient rest. Drinking milk at this stage may stimulate the gastrointestinal tract and trigger secretion of digestive enzymes from the pancreas, thereby increasing its workload. Therefore, milk consumption is strictly prohibited.

During the recovery phase, patients may consume milk in moderation but should choose carefully. Whole milk contains high levels of fat that can stimulate gallbladder contraction and promote pancreatic secretion, which is detrimental to pancreatic recovery. In contrast, low-fat or skim milk can supply high-quality protein while reducing the digestive burden on the pancreas, making it a more suitable option. Milk consumed during recovery should be low-fat or fat-free, with portion control—no more than 200 ml per serving. It is also advisable not to drink milk on an empty stomach and to consume it together with food such as bread.

Daily dietary choices should follow the principles of low-fat, high-vitamin, and easily digestible foods. Patients should eat more fresh fruits and vegetables, lean meat porridge, etc. Additionally, alcohol consumption must be strictly avoided, regular sleep patterns maintained, and follow-up tests such as serum amylase and lipase levels conducted regularly. Dietary plans should be adjusted according to recovery progress to facilitate condition improvement.

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Dr. Gao Jun
May 30, 2025
Is the skin itchy in lupus erythematosus?

In general, the skin affected by lupus erythematosus may exhibit itching.

Lupus erythematosus is an autoimmune disease with diverse symptoms, including cutaneous manifestations. Skin lesions commonly occur on areas such as the cheeks, malar regions, and lips. They initially present as rashes, possibly accompanied by telangiectasia and grayish-brown adherent scales. These skin lesions may sometimes cause a sensation of itching.

In addition to skin lesions, patients may experience systemic symptoms such as gastrointestinal disturbances, irregular fever, joint pain, or arthritis. Skin itching may also be one of these systemic manifestations. However, not all patients with lupus erythematosus will experience itching alongside their skin symptoms, as this depends on individual variation and disease activity.

If you suspect you may have lupus erythematosus or are experiencing related symptoms, it is recommended to seek timely medical attention for diagnosis and treatment by a qualified physician. Treatment options may include anti-inflammatory medications, immunosuppressive agents, and topical therapies targeting skin symptoms to alleviate itching and other discomforts. Avoid self-diagnosis to prevent delays in proper treatment.

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Dr. Liu Wenmin
May 30, 2025
How long does it take for acute pancreatitis to return to normal?

In general, the recovery time for acute pancreatitis is influenced by multiple factors. Symptoms of mild acute pancreatitis can usually improve within one to two weeks, while severe acute pancreatitis may take several weeks or even months to recover. Detailed analysis is as follows:

Mild acute pancreatitis has a relatively favorable prognosis. Patients with this condition typically experience only mild pancreatic edema without necrosis or infection. With timely fasting, gastrointestinal decompression, suppression of pancreatic enzyme secretion, and supplementation of nutrition and electrolytes, symptoms usually significantly improve within one to two weeks, allowing a gradual return to normal eating habits and daily activities.

However, severe acute pancreatitis presents a more complex clinical course and may be accompanied by complications such as organ failure and infections. The recovery process is longer, and the treatment duration may extend over several weeks or even months. Some patients may require a prolonged period of physical recovery even after discharge. Particularly for those with severe complications, the recovery time may be longer, and the prognosis is generally poorer.

During treatment, it is essential to strictly follow medical advice and schedule regular follow-up visits to ensure optimal rehabilitation. Once the condition improves, dietary intake should be reintroduced gradually, transitioning from a low-fat liquid diet to normal food. Fatty and irritating foods should be avoided. During the recovery process, high-fat diets, alcohol, and other triggering factors should be avoided to maintain a healthy lifestyle and prevent disease recurrence.

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Dr. Gao Jun
May 30, 2025