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Acrodermatitis – Causes, Symptoms and Treatment
Acrodermatitis is a skin condition primarily affecting the extremities such as hands, feet, and face. It can have various causes and often occurs in children or in connection with nutritional deficiencies.
Things worth knowing about "Acrodermatitis"
Acrodermatitis is a skin condition primarily affecting the extremities such as hands, feet, and face. It can have various causes and often occurs in children or in connection with nutritional deficiencies.
What is Acrodermatitis?
Acrodermatitis is an umbrella term for inflammatory skin conditions that primarily affect the acral regions of the body -- the hands, feet, face, and other extremities. Several distinct forms exist, differing in cause, progression, and treatment. The most well-known forms include acrodermatitis chronica atrophicans (a late manifestation of Lyme disease), acrodermatitis enteropathica (a rare zinc deficiency disorder), and Gianotti-Crosti syndrome (papular acrodermatitis of childhood).
Forms and Causes
Acrodermatitis Chronica Atrophicans (ACA)
This form is a late-stage manifestation of Lyme disease, a tick-borne infection caused by the bacterium Borrelia burgdorferi. It typically develops months to years after the initial infection and primarily affects older adults. The skin progressively becomes thin, bluish-red, and atrophic (wasting away). The extensor surfaces of the arms and legs are most commonly involved.
Acrodermatitis Enteropathica
This rare, usually genetically inherited condition leads to impaired zinc absorption in the intestine. A zinc deficiency causes characteristic skin inflammation around body orifices (mouth, nose, genitals) and on the hands and feet. Additional symptoms include diarrhea, hair loss, and increased susceptibility to infections. It often presents in infants after weaning from breastfeeding.
Gianotti-Crosti Syndrome (Papular Acrodermatitis of Childhood)
This form occurs predominantly in children between 1 and 6 years of age and is frequently associated with viral infections such as Epstein-Barr virus, hepatitis B virus, or other pathogens. It presents as symmetrically distributed, reddish papules (small skin bumps) on the face, arms, legs, and buttocks.
Symptoms
Symptoms of acrodermatitis vary depending on the form, but share common features:
- Redness, swelling, and inflammation of the skin on the extremities
- Scaling or crust formation
- Skin atrophy (wasting) in the chronic form
- Blistering or papules (small skin bumps)
- Itching or burning sensation
- General symptoms such as fatigue, fever, or swollen lymph nodes (depending on the cause)
Diagnosis
Diagnosis is established through a combination of clinical examination, patient history, and targeted testing:
- Blood tests: Borrelia antibodies for ACA, zinc level measurement for the enteropathic form, viral serology for Gianotti-Crosti syndrome
- Skin biopsy: A tissue sample taken for histological examination
- Dermatological assessment: Evaluation of the skin findings by a specialist
Treatment
Acrodermatitis Chronica Atrophicans
Treatment involves antibiotics, typically doxycycline or amoxicillin administered over several weeks. Early therapy can prevent or slow the progression of skin atrophy.
Acrodermatitis Enteropathica
Treatment consists of oral zinc supplementation, which must be continued lifelong. Under therapy, symptoms typically resolve rapidly and completely.
Gianotti-Crosti Syndrome
As this is a self-limiting condition, specific therapy is usually not required. Symptoms generally resolve on their own within weeks to months. Anti-itch medications may be used for symptomatic relief if itching is severe.
When to See a Doctor?
Persistent, spreading, or intensely itchy skin changes on the hands, feet, or face should always be evaluated by a physician. In children especially, early assessment is important to rule out serious underlying conditions.
References
- Bolognia J.L., Jorizzo J.L., Schaffer J.V. - Dermatology. 4th edition, Elsevier, Philadelphia, 2018.
- Goldsmith L.A. et al. - Fitzpatrick's Dermatology in General Medicine. 8th edition, McGraw-Hill, New York, 2012.
- World Health Organization (WHO) - Zinc deficiency and associated health outcomes. www.who.int.
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