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<p>We describe a patient with genetically confirmed familial early-onset Alzheimer’s disease in whom sensory peripheral neuropathy preceded cognitive decline by almost a decade. A 40- year- old man presented with clinical and electrophysiological features of sensory neuropathy, and 9 years later developed memory disturbances. Genetic testing revealed a heterozygous PSEN1 c.349&#xa0;C &gt; T (p. Pro117Ser) mutation in exon 5. To the best of our knowledge, peripheral neuropathy as an initial manifestation of familial early-onset Alzheimer’s disease has never been reported before and could be a possible manifestation of the underlying degenerative process. With this report, we highlight the rarity of this association and underscore the importance of a comprehensive clinical and electrophysiological evaluation in patients with familial early-onset Alzheimer’s disease who present with sensory symptoms, gait disturbances, skin or trophic changes, or other clinical features suggestive of peripheral neuropathy.</p>

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Peripheral neuropathy as a presenting feature of familial early onset Alzheimer’s disease: a rare clinical association

  • 期刊论文

  • 发表日期：

    2026年7月10日

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  • Chinmayi Chandrakant Seemikeri,
  • Pooja Mailankody,
  • R. T. Rajeswarie,
  • Bhavana Chanda,
  • Rohan R. Mahale,
  • Hansashree Padmanabha

摘要

We describe a patient with genetically confirmed familial early-onset Alzheimer’s disease in whom sensory peripheral neuropathy preceded cognitive decline by almost a decade. A 40- year- old man presented with clinical and electrophysiological features of sensory neuropathy, and 9 years later developed memory disturbances. Genetic testing revealed a heterozygous PSEN1 c.349 C > T (p. Pro117Ser) mutation in exon 5. To the best of our knowledge, peripheral neuropathy as an initial manifestation of familial early-onset Alzheimer’s disease has never been reported before and could be a possible manifestation of the underlying degenerative process. With this report, we highlight the rarity of this association and underscore the importance of a comprehensive clinical and electrophysiological evaluation in patients with familial early-onset Alzheimer’s disease who present with sensory symptoms, gait disturbances, skin or trophic changes, or other clinical features suggestive of peripheral neuropathy.