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Living with Acute febrile neutrophilic dermatosis

A skin condition (Sweet syndrome) with fever, joint pain, and painful skin bumps mainly on the face, neck, back, and arms.

Understanding Acute febrile neutrophilic dermatosis

Acute febrile neutrophilic dermatosis, also called Sweet syndrome, is a skin condition with fever, joint inflammation, and painful skin lesions.

The skin lesions appear mainly on the face, neck, back, and arms. Middle-aged women are most likely to develop it, but it can also affect men, older adults, and infants. GARD lists the onset as adulthood.

Signs & symptoms

Symptoms vary from person to person. GARD lists these among the most common:

  • Fever that comes and goes
  • Painful red skin bumps and patches
  • Skin nodules
  • Joint pain (arthralgia)
  • Muscle aches (myalgia)
  • High white blood cell count

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Specialists who may be involved include autoimmune and inflammatory disease specialists, genetic specialists and skin, hair, and nail specialists.

  3. Consider genetic testing

    Changes in MEFV are linked to this condition. Genetic testing and counseling can help confirm a diagnosis and explain what it means for your family.

Care & treatment

Care team
autoimmune and inflammatory disease specialists (rheumatologists); Genetic specialists (geneticists); Skin, hair, and nail specialists (dermatologists)
Expert care
Ask about multidisciplinary care centers for rare conditions
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with Children's Skin Disease Foundation
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
What could have triggered my Sweet syndrome?
Could my medicines or an infection be involved?
Does the MEFV gene matter for me, and is genetic testing an option?

Quick facts

Symptoms usually startAdult
GenesMEFV

GARD says the exact cause often isn't known. It may be a reaction to things like sun, infections, or some medicines, and it can occur with some cancers. GARD lists the MEFV gene.

GeneticSkin

Also known as: afnd; febrile neutrophilic dermatosis; gomm button disease; sweet disease; sweet syndrome

Patient organizations

Broader rare-disease groups

Source: NIH GARD · Acute febrile neutrophilic dermatosisGARD ID 521 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

You are more than your diagnosis

Perspectives from people navigating life with Acute febrile neutrophilic dermatosis.

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