Skip to content
How It Works
Explore
Ask a Question Resources Pricing
Who It's For
Patients
Decode results, prep for appointments, weigh options.
Caregivers & advocates
Carry the research load for someone you love.
Providers & clinicians
Resources for patients in your practice.
Log In Ask a Question
PubMed This is a summary of 17 peer-reviewed journal articles Updated
Dermatology

Symptoms and Vital Warning Signs of Atopic Eczema

At a Glance

Atopic eczema causes intense itching and skin barrier damage. It's critical to watch for infection warning signs: honey-colored crusting indicates a bacterial infection, while painful 'punched-out' sores with a high fever signal eczema herpeticum, a medical emergency requiring immediate care.

Atopic eczema is defined by a primary, hallmark symptom: pruritus, or intense itching [1]. This itching often leads to the itch-scratch cycle, where scratching the skin provides temporary relief but physically damages the skin barrier [2]. This damage triggers more inflammation, which leads to even more itching, creating a self-reinforcing loop that worsens the disease [3][4].

Changing Patterns with Age

The way atopic eczema looks and where it appears on the body often shifts as a person gets older:

  • Infants (0–2 years): Typically appears on the face (especially the cheeks), the scalp, and the “extensor” surfaces—the outer parts of the arms and legs like the elbows and knees [5].
  • Children and Adults: The rash usually moves to the “flexural” folds—the insides of the elbows, the backs of the knees, the neck, and the wrists [5].

Visual Appearance in Darker Skin Tones

In patients with medium to deeply pigmented skin tones, atopic eczema can look different than what is often shown in medical textbooks. This can sometimes lead to a delay in diagnosis.

  • Color Changes: Instead of bright red, the affected areas may appear purple (violaceous), grey, or dark brown [5].
  • Texture and Patterns: Patients may experience lichenification (skin that has become thick and leathery from chronic scratching) or follicular patterns, where the eczema presents as small, rough bumps centered around the hair follicles [5].

Warning Signs of Infection

Because the skin barrier is compromised, people with atopic eczema are highly susceptible to secondary infections. Knowing how to spot these is critical for safety.

Infection Type Key Signs to Watch For Why it Matters
Bacterial (Staph) “Honey-colored” crusting, weeping or oozing of clear/yellow fluid, and increased warmth or swelling [6][7]. Staphylococcus aureus colonization is linked to more severe flares and can lead to systemic illness if not treated [8][5].
Viral (Eczema Herpeticum) Sudden onset of painful, “punched-out” sores (uniform circular erosions) and high-grade fever [9][10]. This is a medical emergency. Eczema Herpeticum is a rapidly spreading infection caused by the herpes virus and requires immediate antiviral treatment [11][12].

When to Seek Immediate Care

You should contact your medical team or seek emergency care immediately if you notice “red flag” symptoms:

  • A sudden, painful rash that looks like clusters of blisters or “punched-out” holes [13][14].
  • The skin is rapidly worsening despite using prescribed treatments [15][9].
  • The rash is accompanied by a high fever, chills, or a general feeling of being very unwell [16][17].
  • The eczema is spreading to the area around the eyes, which can risk vision if infected [12].

Back to Home

Common questions in this guide

How does atopic eczema change as my child grows?
In infants, eczema typically appears on the face, scalp, and the outer parts of the arms and legs. As children grow older, the rash usually shifts to the inner folds of the elbows, the backs of the knees, the neck, and wrists.
What does atopic eczema look like on darker skin?
On medium to deeply pigmented skin, eczema may appear purple, grey, or dark brown rather than bright red. It can also cause the skin to become thickened and leathery, or present as small, rough bumps centered around the hair follicles.
How can I tell if my eczema has a bacterial infection?
Signs of a bacterial infection, such as Staph, include honey-colored crusting, skin that is weeping or oozing clear to yellow fluid, and increased warmth or swelling in the affected area.
What is eczema herpeticum and what are the symptoms?
Eczema herpeticum is a severe, rapidly spreading infection caused by the herpes virus. Symptoms include the sudden appearance of painful, 'punched-out' circular sores or blisters, accompanied by a high-grade fever. This is a medical emergency.
When should I go to the emergency room for an eczema flare?
You should seek immediate emergency care if you develop painful clusters of blisters or punched-out holes, a high fever with chills, or if the rash rapidly spreads, especially near the eyes.

Questions to Ask Your Doctor

Curated prompts to bring to your next appointment.

  1. 1.How should I distinguish between a standard flare-up and a secondary infection like Staphylococcus aureus?
  2. 2.Can you show me how to recognize 'punched-out' sores or signs of Eczema Herpeticum in my (or my child's) specific skin tone?
  3. 3.Given the 'itch-scratch cycle,' what is the best strategy to stop the physical damage to the skin barrier?
  4. 4.What are the specific 'red flag' symptoms that should prompt me to go to the emergency room rather than waiting for a scheduled clinic visit?
  5. 5.How do you expect the location of the eczema to change as my child gets older?

Questions For You

Tap a prompt to share your answer — we'll use it plus this page's context to start a tailored conversation.

References

References (17)
  1. 1

    [Pathophysiology of atopic blepharokeratoconjunctivitis].

    Lapp T, Maier P, Jakob T, Reinhard T

    Der Ophthalmologe : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft 2017; (114(6)):504-513 doi:10.1007/s00347-017-0483-1.

    PMID: 28361356
  2. 2

    Infections in Patients with Atopic Dermatitis and the Influence of Treatment.

    Napolitano M, Esposito M, Fargnoli MC, et al.

    American journal of clinical dermatology 2025; (26(2)):183-197 doi:10.1007/s40257-025-00917-z.

    PMID: 39915363
  3. 3

    Atopic Dermatitis: A Common Pediatric Condition and Its Evolution in Adulthood.

    Gupta D

    The Medical clinics of North America 2015; (99(6)):1269-85, xii.

    PMID: 26476252
  4. 4

    Experiences with the first eczema school in the United States.

    Grossman SK, Schut C, Kupfer J, et al.

    Clinics in dermatology 2018; (36(5)):662-667 doi:10.1016/j.clindermatol.2018.05.006.

    PMID: 30217280
  5. 5

    Classification and possible bacterial infection in outpatients with eczema and dermatitis in China: A cross-sectional and multicenter study.

    Wang X, Shi XD, Li LF, et al.

    Medicine 2017; (96(35)):e7955 doi:10.1097/MD.0000000000007955.

    PMID: 28858126
  6. 6

    Temporal variation of Staphylococcus aureus clonal complexes in atopic dermatitis: a follow-up study.

    Clausen ML, Edslev SM, Nørreslet LB, et al.

    The British journal of dermatology 2019; (180(1)):181-186 doi:10.1111/bjd.17033.

    PMID: 30070683
  7. 7

    IgG response against Staphylococcus aureus is associated with severe atopic dermatitis in children.

    Totté JEE, Pardo LM, Fieten KB, et al.

    The British journal of dermatology 2018; (179(1)):118-126 doi:10.1111/bjd.16153.

    PMID: 29194572
  8. 8

    Microbiologic characterisation of bacterial infections in children with atopic dermatitis.

    Zwane NO, Masuka JT, Chateau AV, Mosam A

    Southern African journal of infectious diseases 2022; (37(1)):368 doi:10.4102/sajid.v37i1.368.

    PMID: 35399557
  9. 9

    Woman with a Painful Rash.

    Shalabi L, Eilbert W

    Clinical practice and cases in emergency medicine 2025; (9(1)):107-108 doi:10.5811/cpcem.20735.

    PMID: 39903638
  10. 10

    Punched-out erosions with scalloped borders: Group A Streptococcal pustulosis.

    Shayegan LH, Richards LE, Morel KD, Levin LE

    Pediatric dermatology 2019; (36(6)):995-996 doi:10.1111/pde.13956.

    PMID: 31410890
  11. 11

    [Eccema herpético en una paciente con dermatitis atópica].

    Pavía Espinosa MR, Huchim Peña CJ, Escalante Buendía EA, et al.

    Revista alergia Mexico (Tecamachalco, Puebla, Mexico : 1993) 2023; (70(4)):163-166 doi:10.29262/ram.v70i3.1212.

    PMID: 37933926
  12. 12

    Kaposi's Varicelliform Eruption: A Potentially Life-Threatening Complication of Atopic Dermatitis.

    Martín-Galache M, Escalona-Gil AM, Posado-Domínguez L, et al.

    European journal of case reports in internal medicine 2024; (11(5)):004392 doi:10.12890/2024_004392.

    PMID: 38715890
  13. 13

    Oral treatment with valacyclovir for HSV-2-associated eczema herpeticum in a 9-month-old infant: A case report.

    Zhuang K, Wu Q, Ran X, et al.

    Medicine 2016; (95(29)):e4284 doi:10.1097/MD.0000000000004284.

    PMID: 27442669
  14. 14

    Eczema Herpeticum: Would You Know It If You Saw It?

    Blanter M, Vickers J, Russo M, Safai B

    Pediatric emergency care 2015; (31(8)):586-8 doi:10.1097/PEC.0000000000000516.

    PMID: 26241712
  15. 15

    Osteomyelitis complicating secondarily infected atopic eczema: two case reports and a narrative literature review.

    Masuka JT, Troisi K, Mkhize Z

    BMC dermatology 2020; (20(1)):2 doi:10.1186/s12895-019-0098-0.

    PMID: 32008574
  16. 16

    Extensive eczema herpeticum in a previously well child.

    Almoalem M, AlAlhareth I, Alomer H, et al.

    International journal of emergency medicine 2022; (15(1)):21 doi:10.1186/s12245-022-00425-5.

    PMID: 35597913
  17. 17

    An 8-Month-Old Girl With Vesicular Rash.

    Ozcan A, Kahale K, Nguyen D

    Global pediatric health 2019; (6()):2333794X19838526 doi:10.1177/2333794X19838526.

    PMID: 30956997

This page provides information on atopic eczema symptoms and warning signs for educational purposes only. Always consult a healthcare provider for a proper diagnosis or if you suspect a dangerous skin infection.

Get notified when new evidence is published on atopic eczema.

We monitor PubMed for new peer-reviewed studies on this topic and email a short summary when something meaningful changes.