Grover’s Disease (Transient Acantholytic Dermatosis)

Definition

• Grover’s disease is an itchy dermatosis characterised by small, red, crusted or eroded papules/vesicles, primarily affecting the central back, mid-chest, and upper arms.

• Most common in Caucasian men over 50 years with sun-damaged

• Can be short-lived or persist for days to decades, often exhibiting a seasonal fluctuation (e.g. worse in winter)

Risk Factors

• Sweating, sun exposure, fever: Heat and perspiration can exacerbate or precipitate lesions

• Malignancy or Prolonged Bed Rest: Hospitalised, bed-bound, or debilitated patients sometimes develop Grover’s disease

• Other: Chronic sun-damaged skin, older age, and fair complexion

Clinical Features

• Lesions: Small, red, sometimes crusted or eroded papules, occasionally vesicular

• Pruritus: Often intense itch, worsened by sweating or heat

• Distribution: Typically the central back, chest, upper arms, though it can appear on the trunk generally

• Course: May last days to weeks, spontaneously resolving, but can persist for months or even years in recurrent or chronic forms

Management

Self-Limiting

• Many cases resolve spontaneously without specific treatment; focus on symptomatic relief.

General Measures

• Cooling Measures: Keep ambient temperatures comfortable; avoid excessive heat or sweaty environments

• Moisturisers: Prevent dryness and reduce itching; apply after bathing

• Avoid Triggers: Minimising sweating (light clothing, air-conditioned environment), gentle sun exposure if triggers are known

Topical Treatments

• Topical Corticosteroids (e.g. betamethasone dipropionate, triamcinolone) to reduce inflammation and pruritus

  • Apply once or twice daily, for short courses (1–2 weeks), with caution around skin thinning

• Calamine or menthol-based lotions for mild cooling effect

More Severe Cases

• Oral Retinoids (e.g. acitretin) under specialist guidance if refractory

• Phototherapy (NB-UVB or PUVA) can be beneficial for extensive or resistant disease

• Oral Antihistamines for significant itch, though efficacy varies

Notes

• Patients often benefit from reducing friction or sweating on affected areas; wearing loose, breathable clothing.

• Differential diagnoses include eczema, psoriasis, pityriasis rosea, Darier’s disease, or pemphigus foliaceus (in acantholytic conditions).

• If lesions do not respond to standard topical therapies or have unusual features, consider referral to a dermatologist for biopsy and advanced management.