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L11.1 – Transient Acantholytic Dermatosis

L11.1 is the ICD-10 code for transient acantholytic dermatosis (Grover's disease), a skin condition causing itchy papules and vesicles on the trunk.

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Things worth knowing about "L11.1"

L11.1 is the ICD-10 code for transient acantholytic dermatosis (Grover's disease), a skin condition causing itchy papules and vesicles on the trunk.

What is L11.1 (Transient Acantholytic Dermatosis)?

The ICD-10 code L11.1 refers to transient acantholytic dermatosis, commonly known as Grover's disease. It is an acquired skin condition characterized by a loss of cohesion between epidermal cells – a process called acantholysis. The condition manifests as small, itchy papules and vesicles primarily on the trunk. It most commonly affects men over the age of 40.

Causes

The exact cause of transient acantholytic dermatosis has not yet been fully established. Known or suspected triggering factors include:

Heat and sweating (e.g., from exercise, fever, or hot environments)
UV radiation (sun exposure)
Prolonged bed rest or sustained body heat
Ionizing radiation (e.g., from radiation therapy)
Certain medications and immunosuppression
Dry skin (xerosis)

Acantholysis occurs due to a defect in the desmosomes – the structural connections between skin cells – causing the epidermal cells to separate.

Symptoms

The typical symptoms of Grover's disease include:

Small red to brownish papules and vesicles on the trunk, particularly the chest, abdomen, and back
Intense itching (pruritus), which can significantly impair quality of life
Scaling and mild crust formation
Occasionally a burning sensation on the skin

The course of the disease is generally self-limiting (transient), meaning the skin changes resolve within weeks to months. However, in some patients the condition can follow a chronic or relapsing course.

Diagnosis

Diagnosis is typically established through:

Clinical examination by a dermatologist
Skin biopsy with histological analysis: this reveals characteristic signs of acantholysis and various histological patterns that may resemble other conditions such as Darier disease or pemphigus

Histological findings are essential for a definitive diagnosis and for distinguishing the condition from other blistering or acantholytic dermatoses.

Treatment

Since the condition is often self-limiting, treatment focuses on relieving symptoms. Available treatment options include:

Topical corticosteroids to reduce inflammation and itching
Topical retinoids (e.g., tretinoin) for treatment-resistant cases
Antihistamines to relieve itching
Emollients (moisturizing creams) for dry skin
Systemic retinoids (e.g., isotretinoin, acitretin) for severe or chronic cases
PUVA therapy (photochemotherapy) in selected cases

General measures such as avoiding heat, sweating, and intense sun exposure can help prevent or reduce flare-ups.

References

Grover RW. – Transient acantholytic dermatosis. Archives of Dermatology, 1970.
World Health Organization – ICD-10: International Statistical Classification of Diseases and Related Health Problems, 10th Revision.
Chalet M, Grover R, Ackerman AB. – Transient acantholytic dermatosis: a reevaluation. Archives of Dermatology, 1977.

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