100th anniversary of Perusini's second case: patient RM and his kindred

Area of Science:

• Neurology
• Psychiatry
• Medical History

Background:

• Review of Gaetano Perusini's early case studies on psychiatric diseases of older age.
• Focus on Case II: analysis of patient RM's age at disease onset.
• Investigation into potential autosomal dominant inheritance within RM's family.

Discussion:

• Correction of RM's age at admission, indicating a later onset than initially reported.
• Exploration of Perusini's observations regarding RM's brother.
• Initiation of extensive genealogical research to trace familial history over eight generations.

Key Insights:

• Archival analysis revised RM's age, impacting the understanding of early-onset disease.
• Genealogical study initiated to investigate potential genetic links in an early Alzheimer's case.
• Highlights the importance of meticulous historical record analysis in neurodegenerative disease research.

Outlook:

• Further elucidation of the genetic factors contributing to early-onset Alzheimer's disease.
• Potential to refine historical timelines and understanding of disease progression.
• Contribution to the broader study of familial Alzheimer's disease pedigrees.