Relapsing linear acantholytic dermatosis in a four-year-old boy

Area of Science:

• Dermatology
• Genodermatoses
• Cutaneous Medicine

Background:

• Linear acantholytic dermatoses are a group of skin conditions characterized by acantholysis and lesions following linear patterns.
• These dermatoses can present with zosteriform or Blaschko linear arrangements.
• Acantholysis, the loss of intercellular adhesion in the epidermis, is a key histopathological feature.

Observation:

• A four-year-old boy presented with a relapsing skin condition over a two-year follow-up period.
• The patient's lesions exhibited a distinct linear pattern along the lines of Blaschko.
• Clinical presentation suggested a form of acantholytic dermatosis.

Findings:

• Histopathological examination of a lesion revealed epidermal acantholysis.
• Multiple acantholytic keratinocytes were observed within the prickle cell layer.
• The absence of corps ronds and grains, along with acantholysis, was consistent with Hailey-Hailey disease.

Implications:

• This case represents the third reported instance of a relapsing linear acantholytic dermatosis.
• The findings contribute to understanding the spectrum and clinical variability of genodermatoses.
• Further research may elucidate the specific genetic or etiological factors underlying this rare presentation.