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    Pachyonychia congenita (PC) is a rare skin disorder causing nail dystrophy and skin thickening. This case study presents two male patients with varying symptoms of PC, highlighting the condition's diverse clinical presentation.

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    Area of Science:

    • Dermatology
    • Genetics
    • Rare Diseases

    Background:

    • Pachyonychia congenita (PC) is an infrequent genodermatosis.
    • Characterized by nail dystrophy, palmoplantar hyperkeratosis, follicular keratosis, and leukoplakia.

    Observation:

    • Two male patients, aged 12 and 35 years, were diagnosed with PC.
    • The younger patient exhibited nail changes, palmoplantar keratoderma, eye abnormalities, hypotrichosis, and intellectual disability.
    • The elder patient presented with minimal nail changes, keratoderma, and leukoplakia.

    Findings:

    • The study highlights the variable expressivity of Pachyonychia congenita.
    • Clinical manifestations ranged from severe symptoms in the younger patient to milder symptoms in the elder patient.
    • Specific symptoms included nail dystrophy, palmoplantar keratoderma, follicular keratosis, leukoplakia, eye changes, hypotrichosis, and mental retardation.

    Implications:

    • Understanding the spectrum of PC symptoms is crucial for accurate diagnosis and management.
    • Further research into the genetic basis and phenotypic variability of PC is warranted.
    • This case series contributes to the literature on rare genodermatoses, aiding clinicians in recognizing diverse presentations.