What Is Eczema (Atopic Dermatitis)? Symptoms, Causes, Diagnosis, Treatment, Prevention
![Joseph Bennington-Castro](http://www.thaiemart.com/images/images/everydayhealth/joseph-bennington-castro-bio-177.jpg?w=48)
Eczema is not a specific disease, but rather a term that describes a group of inflammatory skin conditions that produce rash-like symptoms, such as red, itchy patches on the skin.
It's also known as dermatitis (skin inflammation), atopic eczema ("atopic" means a genetic tendency toward allergic hypersensitivity), or simply atopic dermatitis.
实际上,“湿疹”一词通常与“特应性皮炎”互换使用,尽管从临床上讲,特应性皮炎是最常见的湿疹类型。
![特应性皮炎的手臂](http://www.thaiemart.com/images/images/skin-beauty/eczema/what-is-eczema-atopic-dermatitis-symptoms-causes-diagnosis-treatment-prevention-01-722x406.jpg?sfvrsn=7bfd92d1_0)
Common Questions & Answers
Pictures of Different Types of Eczema
These include:
Contact Eczema (Contact Dermatitis)
![hand ring contact-dermatitis](http://www.thaiemart.com/images/images/what-is-eczema-01-contact-dermatitis-722x406.jpg?sfvrsn=f8da82eb_4)
Hand Eczema
![hand eczema](http://www.thaiemart.com/images/images/what-is-eczema-02-hand-eczema-722x406.jpg?sfvrsn=3b197278_4)
汗疱湿疹
![dyshidrotic-eczema](http://www.thaiemart.com/images/images/what-is-eczema-03-dyshidrotic-eczema-rm-722x406.jpg?sfvrsn=938de2df_4)
Small, itchy blisters on the soles of the feet and edges of the fingers, toes, and palms may be signs ofdyshidrotic eczema。Stressand allergies are two possible triggers for this form of eczema.
Nummular Eczema
![nummular eczema](http://www.thaiemart.com/images/images/what-is-eczema-04-nummular-eczema-rm-722x406.jpg?sfvrsn=edbecb66_4)
Compared to other types of eczema, nummular eczema appears differently: as itchy, coin-shaped spots on the skin.
Stasis Dermatitis
![stasis dermatitis](http://www.thaiemart.com/images/images/what-is-eczema-05-stasis-dermatitis-722x406.jpg?sfvrsn=1e31da28_4)
This occurs when fluid leaks out of the veins and into the skin due to blood flow issues.
Seborrheic Dermatitis
![头皮屑皮脂性皮炎](http://www.thaiemart.com/images/images/what-is-eczema-06-seborrheic-dermatitis-722x406.jpg?sfvrsn=a32ad3b7_4)
Seborrheic dermatitishappens when white or yellow scaly patches of skin develop in oily areas, such as the头皮(作为头皮屑),脸部和耳朵,部分是由于生活在皮肤上的微生物(例如某些类型的酵母)的结果。
Easing Eczema During COVID-19
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Signs and Symptoms of Eczema
People with eczema have very dry, itchy skin and rashes on various parts of the body — particularly the face, hands, feet, insides of the elbows, and behind the knees.
In addition, skin lesions and blotches may develop on the wrists, ankles, sides of the neck, or around the mouth.
对于大多数人来说,主要symptom of eczemais itching, which can lead to scratching and rubbing that further irritates the skin. This can, in turn, lead to the “itch-scratch cycle” or increased itching and scratching that worsens eczema symptoms.
Other skin symptoms associated with eczema include:
- Rough, leathery patches of skin
- Red, raised bumps (hives)
- Increased skin creases on the palms of the hands
- Small, rough bumps on the face, upper arms, and thighs
- Scaly skin patches
- Swollen, sore skin
- Skin color changes
Causes and Risk Factors of Eczema
Skin affected by eczema is unable to retain moisture well, possibly because of low production of fats and oils. It is also caused by a disrupted skin barrier, allowing whatever moisture the skin has to freely evaporate into the air. This causes it to become dry and lose its protective properties.
It's not clear what causes certain people to develop eczema, specifically atopic dermatitis.
Children are more likely to develop eczemaif other allergic diseases — such as hay fever and asthma — run in the family, which suggests that there may be a genetic component to the condition. Read more about conditions related to eczema below.
Though dermatologists don’t necessarily consider eczema an autoimmune disorder, the symptoms of atopic dermatitis are thought to be the result of an immune system overreaction or dysfunction.
In addition to genetic and immune system factors, environmental factors also play a role in worsening or triggering eczema.
- Soaps, detergents, shampoos, and dishwashing liquids
- Bubble bath liquids
- Dust or sand
- 香烟烟雾
- Perfumes, and skin-care products that contain fragrances or alcohol
- Wool or synthetic fabrics
- Chemicals, solvents, and mineral oils
- Mold
- Pollen
- Pet dander
- Allergenic foods (such as peanuts,soy, andeggs)
- Dust mites
- A hot or dry climate
- High or low humidity
- Bacterial, viral, or fungal infections
在某些情况下,湿疹症状与昆虫叮咬orallergic reactions。
![eczema on hands](http://www.thaiemart.com/images/images/skin-beauty/eczema/what-is-eczema-atopic-dermatitis-symptoms-causes-diagnosis-treatment-prevention-02-722x406.jpg?sfvrsn=1821580a_0)
How Much Do You Know About Eczema?
How Is Eczema Diagnosed?
To diagnose eczema, your doctor will first conduct a physical examination to look at the state of your skin and see if you have the characteristic rash of the illness.
They may perform a skinbiopsy(remove a skin sample for examination) to confirm the diagnosis and rule outother skin conditions。
Prognosis of Eczema
But about one-half of adults with atopic dermatitis had it as a child.
Editor's Picks
![Stories of Atopic Dermatitis](http://www.thaiemart.com/images/images/stories-of-landingpage.jpg?sfvrsn=231ce01e_1)
Stories of Atopic Dermatitis
Duration of Eczema
Atopic dermatitis in adults often lasts a long time and there is no way to determine if it will go away or last a lifetime. But the frequency and severity of symptoms usually decrease over time, and you can control atopic dermatitis through treatment,moisturizing, and by avoiding irritants that cause flare-ups.
![a woman with eczema](http://www.thaiemart.com/images/images/skin-beauty/eczema/what-is-eczema-atopic-dermatitis-symptoms-causes-diagnosis-treatment-prevention-03-rm-722x406.jpg?sfvrsn=52258b4d_0)
Treatment and Medication Options for Eczema
没有治愈for eczema, and the goal of treatment is to reduce eczema symptoms, heal the skin, and prevent skin damage and flare-ups.
Medication, moisturizers, and at-home skin-care routines make up an effective treatment plan for many people who live with eczema.
Medication Options
- Corticosteroids(ointments, creams, or lotions) that include drugs such as0.1 percent fluocinonide cream (Vanos), and come invarying degrees of strength
- Calcineurin inhibitors (TCIs), liketacrolimus (Protopic)andpimecrolimus (Elidel)
- The PDE4 inhibitorcrisaborole (Eucrisa)
- The JAK inhibitor ruxolitinib (Opzelura)
For moderate and severe disease, treatments include:
- Phototherapy
- Biologics, including the self-administered injectable drugsdupilumab (Dupixent)and tralokinumab-ldrm (Adbry)
- Oral immunosuppressants, likecyclosporine (Neoral, Sandimmune, or Restasis),methotrexate (Trexall or Rasuvo), ormycophenolate (CellCept)
- The oral JAK inhibitorsupadacitinib (Rinvoq)and abrocitinib (Cibinqo)
- Wet wrap therapy, which combines topical medicines and moisturizers with a wet gauze wrap.
Other treatments for itching includeantihistamines, such asdiphenhydramine (Benadryl),hydroxyzine, ordoxylamine succinate (Unisom), which may help prevent nighttime scratching.
RELATED:The Consumer’s Guide to Biologics for Atopic Dermatitis
Diet Options
Elimination diets are also used to diagnose autoimmune conditions such aseosinophilic esophagitis (EoE),一种食管的慢性疾病American College of Gastroenterology。
Alternative and Complementary Therapies
Prevention of Eczema
There is no proven way to prevent getting eczema. Nonetheless, research suggests children who are breastfed until they’re 4 months old may be less likely to get it. Alternatively, partially hydrolyzed formula, which contains processed cow milk protein, may also reduce a child's chance of developing atopic dermatitis.
- Follow a healthy skin-care routine, including using moisturizing cream or ointment two to three times a day.
- Use gloves when needed, such as when you’re at risk of coming in contact with irritants. That means while working outside or if you have to put your hands underwater (to absorb sweat, wear cotton gloves under plastic gloves).
- Bathe smart,例如仅使用温和的肥皂和不冷不热的水作为浴缸或淋浴,然后拍打皮肤而不是摩擦。
- Stay coolbydrinking lots of water, and avoiding getting hot and sweaty.
- Wear loose clothes— that is, those that are made of cotton and other natural materials.
- Keep your body temperature steadyby avoidingsudden changes in temperature和湿度。
- Tame stressby recognizing the signs andtaking steps to manage it。
- Limit exposureto known irritants and allergens as best you can.
- Don't itchaffected skin areas.
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![Streptococcus pyogenes bacteria](http://www.thaiemart.com/images/images/skin-beauty/eczema/what-is-eczema-atopic-dermatitis-symptoms-causes-diagnosis-treatment-prevention-04-rm-722x406.jpg?sfvrsn=3398cd76_0)
Complications of Eczema
People with eczema are at risk of developing infections if they scratch themselves so much that they break the skin.
研究和统计:谁有湿疹?有多少人有湿疹?
Eczema can occur at any age, but it typically begins in infancy and early childhood.
National survey data suggest the one-year prevalence of atopic dermatitis among American adults was 10.2 percent in 2010 and 7.2 percent in 2012. But the surveys used different questions: The former referred to "dermatitis, eczema, or any other red, inflamedskin rash“然后是“湿疹或皮肤过敏”。
No, Eczema Isn’t Contagious
Secondary infections, however, can be spread from a person with eczema to a person without the skin disease. Here’s what to know.
Article![Article](http://www.thaiemart.com/images/images/skin-beauty/eczema/is-eczema-contagious-why-the-answer-isnt-so-simple-rm-722x406.jpg?sfvrsn=a61fd96_0)
Related Conditions
Furthermore, skin infections due to a compromised skin barrier may affect people with eczema. They include:
- 葡萄球菌感染(以及胸部或沸腾)
- Eczema herpeticum
- Cellulitis
- Impetigo
BIPOC and Eczema
- White: 11 percent
- African American or Black: 10 percent
- Asian or Pacific Islander: 13 percent
- Native American: 13 percent
综述的作者还指出,非洲American children are 1.7 times more likely to develop atopic dermatitis compared with European American children, even when adjusting for household income, parental education level, metropolitan versus rural environment, and health insurance coverage status.
Another finding detailed in the review: African American children are 3 times more likely to be diagnosed with atopic dermatitis during a dermatologist visit than European American children, even though they are significantly less likely to seek dermatological care, while Asian American kids are 7 times more likely compared with white kids.
The itching due to eczema has been shown to have a greater impact on Black patients, who also tend to have more severe disease, per the NEA.
Eczema can lead to skin discoloration, as can scratching itchy areas. Darkened patches (hyperpigmentation) or lightened ones (hypopigmentation) can be a particular concern for people of color.
Although skin tone eventually evens out on its own, the discoloration can linger for weeks, months, or longer, according to the Skin of Color Society.
Changes in skin color can be improved with appropriate treatment for the underlying eczema and inflammation.
Eczema Resources We Love
最喜欢的Orgs for Essential Info About Eczema (Atopic Dermatitis)
National Eczema Association (NEA)
The NEA is the most prominent U.S. organization devoted solely to education, research, patient support, and advocacy related to atopic dermatitis and other forms of eczema. We love their eczema fact sheets, glossary of skin-care terms, and informative webinars. Plus, they have a yearly family-friendly Eczema Expo each summer at a vacation destination.
This society is one of the most visible resources in the United Kingdom to educate people about eczema, provide help for people with the disease, and support research. Perhaps their most unique resource is a confidential telephone and email hotline that people in the United Kingdom can call Monday through Friday, 8 a.m. to 8 p.m. local time.
How to Take a Bath if You Have Eczema-Prone Skin
最喜欢的Orgs for Essential InfoAbout Skin and Allergic Diseases, Including Eczema
American Academy of Dermatology (AAD)
The AAD says it is the largest professional dermatologic association, with more than 20,500 physicians as members worldwide. They publish information about a variety of skin conditions, and we recommend checking out the robust resource center with information about childhood and adult eczema.
Because allergens can trigger eczema flareups, it makes sense to stay on top of information about managing allergies. The AAFA’s site has a wealth of information about allergies, for both adults and kids.
最喜欢的AnnualMeetings for Eczema Patients
The NEA’s annual expo provides a vacation retreat for people and families affected by eczema. The four-day event includes activities; educational seminars; camps for infants, children, and teens; and hotel accommodations that are as free of potential allergens as possible. The next Eczema Expo is June 25 through 28, 2020, in Orlando, Florida. The organization offers a limited amount of基于需求的奖学金to help people attend.
最喜欢的Alternative Medicine Resource
National Eczema Association — Complementary and Alternative Treatments
此NEA页面提供有关针灸,印度草药,天然油和其他替代疗法如何有助于缓解湿疹症状的信息。
Can Yoga Help Relieve Eczema Symptoms?
最喜欢的Online Support Networks
Filling out a lengthy form indicating your areas of interest will give you free access to an online forum that includes discussion threads on eczema-related topics. Each time you log in you will see a stream of blog posts with daily news and the latest discussion threads.
We recommend this NEA-hosted forum for sharing support and advice about living with eczema. After registering for free, members post questions or comments in freewheeling discussions and receive written replies, or reactions via “Support,” “Thanks,” and “Useful” buttons.
最喜欢的Sites for Eczema Relief Products
Find household products that are certified “Asthma & Allergy Friendly,” and therefore less likely to trigger eczema flare-ups, through the Asthma and Allergy Foundation of America’s online store.
全国湿疹协会拥有一家在线商店,包括敏感的皮肤友好产品,可承受NEA的接纳密封,这意味着它们适用于中度至重度皮肤状况的人。获取保湿剂,清洁剂,洗涤剂和其他旨在保护和不刺激皮肤的物品。
最喜欢的Resource for Diet Advice
Elimination Diets — NEA on Eczema and Food Allergies
Avoiding foodallergy triggersmay help you manage eczema, but sometimes you need help identifying precisely what the triggers are. This is where an elimination diet may help. This approach involves omitting a food you think is problematic and then reintroducing it to see what happens. We love this article with information from the dermatologist Peter Lio, MD, which delves into some of the misconceptions about the diet, as well as the link between eczema and what you eat.
最喜欢的Resource for Becoming an Advocate
We love that the NEA has made it so easy to advocate for better healthcare policies. Their Advocacy Action Center enables people to browse legislation related to eczema in various states. If you wish to “take action,” you can click on a button and fill out an online form to send a message to your local lawmaker.
最喜欢的Eczema Tracking App
Eczema Tracker
信息就是力量管理ecz时ema symptoms and flare-ups. Eczema Tracker allows you to take a photo of flare-ups and monitor your condition, as well as track and analyze a wealth of information concerning your triggers, allergies, and skin. The app even provides local pollen, weather, mold, and humidity information to help you manage your symptoms. It uses your data to find trends that may lead to flare-ups. Eczema Tracker is available only for iOS in the Apple Store. It is a free app.
Is Turmeric Helpful for Treating Eczema?
最喜欢的Eczema Spa Retreat
Participants in the 2019 NEA Eczema Expo were able to enjoy spa treatments at a local day spa in consultation with a dermatologist who could help them to choose the best treatments for their skin condition. We hope they will do this again in 2020!
![Healthy Skin](http://www.thaiemart.com/images/images/newsletter-signup/skin-and-beauty-nl-signup.jpg?sfvrsn=4ff4e5aa_2)
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Editorial Sources and Fact-Checking
- Atopic Dermatitis.National Institute of Arthritis and Musculoskeletal and Skin Diseases。July 31, 2016.
- Eczema.National Eczema Association。
- Eczema Causes and Triggers.National Eczema Association。
- McPherson T. Current Understanding in Pathogenesis of Atopic Dermatitis.Indian Journal of Dermatology。November–December 2016.
- Types of Eczema.National Eczema Association。
- Hand Eczema.National Eczema Association。
- Atopic Dermatitis.MedlinePlus。October 24, 2016.
- Eczema: Diagnosis and Tests.National Jewish Health。July 1, 2015.
- Atopic Dermatitis Treatment.American Academy of Dermatology。
- Darsow U, Wollenberg A, Simon D, et al. Difficult to Control Atopic Dermatitis.World Allergy Organization Journal。March 2013.
- Prescription Topical Treatment.National Eczema Association。
- Topicals, Oral Medicines, and Phototherapy: An Overview of Eczema Treatments.National Eczema Association。
- Phototherapy.National Eczema Association。
- Eczema (Atopic Dermatitis) Treatment.National Institute of Allergy and Infectious Diseases。May 24, 2017.
- Everything You Need to Know About Eczema and Food Allergies.National Eczema Association。December 13, 2018.
- Eczema: Can Eliminating Particular Foods Help?InformedHealth.org。February 23, 2017.
- Eczema and Bathing.National Eczema Association。
- Complementary and Alternative Treatments.National Eczema Association。
- Eczema (Atopic Dermatitis) Complications.National Institute of Allergy and Infectious Disease。August 28, 2015.
- 湿疹。National Eczema Association。
- Eczema and Emotional Wellness.National Eczema Association。
- Eczema Facts.National Eczema Association。
- Lee HH, Patel KR, Singam V, et al. A Systematic Review and Meta-Analysis of the Prevalence and Phenotype of Adult-Onset Atopic Dermatitis.Journal of the American Academy of Dermatology。2019年6月。
- Conditions Related to Eczema.National Eczema Association。
- Food Allergy and Children With Eczema.National Eczema Association。
- Traditional Smallpox Vaccines and Atopic Dermatitis Frequently Asked Questions.National Eczema Association。
- Eczema.Cleveland Clinic。October 28, 2020.
- Eczema: Prevention.Cleveland Clinic。October 28, 2020.
- Ask the Ecz-perts: What Can Be Done About Dark Spots Left by Eczema?National Eczema Association。June 9, 2021.
- Hewett L. Eczema in Skin of Color: What You Need to Know.National Eczema Association。February 15, 2018.
- Kathuria P, Kundu RV. Eczema.Skin of Color Society。
- Brunner PM, Guttman-Yassky, E. Racial Differences in Atopic Dermatitis.Annals of Allergy, Asthma, and Immunology。November 19, 2018.
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