Is eczema contagious?

Written by Xie Ming Feng
Dermatology
Updated on September 05, 2024
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Infectious diseases are communicable diseases caused by the infection of pathogenic microorganisms or parasites, whereas eczema is an allergic reaction of the body itself and thus is not contagious. In daily life, whether it is through conversation, sharing utensils or bath items, or even direct contact with the rash of an affected individual, transmission does not occur, and family members of the patient do not need to take any protective measures. If you are around someone with eczema, there is no need for caution or discrimination, which is completely unnecessary. Some might worry whether scrotal eczema can be transmitted sexually. Sexually transmitted diseases are primarily transmitted through sexual contact or activities similar to sexual behaviors, while scrotal eczema is a common inflammatory reaction of the scrotal skin, triggered by a delayed-type hypersensitivity reaction due to both internal and external factors, and it is not contagious. Therefore, scrotal eczema is not a sexually transmitted disease.

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How to distinguish eczema from prickly heat

Eczema and heat rash have clear differences, including different causes. Eczema is primarily caused by allergens, as well as excessive mental stress, anxiety, and hormonal imbalances. Heat rash, on the other hand, usually arises from overly humid and hot environments that affect normal sweating function, leading to blocked sweat ducts. Their clinical manifestations also differ. Eczema typically presents as polymorphic and symmetrically distributed lesions, usually manifesting as papules and vesicular papules, and in severe cases, erosion, exudation, and significant itching are observed. Heat rash clinically appears as tiny, pin-sized blisters that emerge in clusters and merge into patches, typically found at skin folds without symmetry. White heat rash generally has less noticeable itching, whereas red heat rash is itchy and can also feel burning.

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Written by Yao Li Qin
Pediatrics
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How to treat infant eczema?

Infant eczema is a common skin problem in infants and toddlers, also known as atopic dermatitis. The first thing to pay attention to when a child has eczema is to moisturize the affected skin. Eczema is caused by dry skin, so moisturizing is particularly important. On top of moisturizing, under the guidance of a doctor at the hospital, we can use some mild corticosteroid creams. Through such measures, eczema can generally be well controlled. However, the biggest characteristic of eczema is that it is particularly prone to recurrence, so for children, we must treat it through diet and allergens. For children who drink formula, depending on the severity of the eczema, the child should be fed amino acid formula or hydrolyzed protein formula. For breastfed children, the diet of the nursing mother needs to be controlled – beef, lamb, nuts, seafood, and foods containing distiller's grains should be avoided. (The use of medications should be conducted under the guidance of a professional doctor.)

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Written by Xie Ming Feng
Dermatology
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Can eczema be inherited?

Eczema does not have a genetic predisposition. Patients with atopic dermatitis likely experience rashes due to genetic factors, and their offspring may also inherit this propensity for allergies. However, different members within the same family can suffer from different allergic diseases.

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Written by Xie Ming Feng
Dermatology
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What to eat for eczema

Patients with eczema can choose some foods that have the effects of clearing heat and detoxifying, removing dampness and relieving itching, strengthening the spleen and aiding digestion, cooling the blood and calming the liver. However, dietary therapy only plays a supporting role in treatment and is not a professional method. Therefore, patients with eczema must actively seek treatment under the guidance of a doctor.

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Written by Liu Gang
Dermatology
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The difference between tinea cruris and eczema

Tinea cruris is caused by a fungal infection and its occurrence is generally localized, usually appearing on the upper thigh or buttocks. Eczema, on the other hand, is mainly caused by allergies and can occur in varying locations, possibly on the upper thigh or external genitals, and can even spread across the entire body. The treatments for these two diseases differ; tinea cruris can generally be cured with antifungal creams, whereas the treatment for eczema involves a combination of medications including oral antiallergic drugs and the topical application of steroid creams. Both conditions are relatively treatable, but if they persist for a long time, continuous effort and the adoption of good dietary and lifestyle habits are necessary. Avoid public baths and swimming pools and try to abstain from spicy and irritating foods.