This concise 125‑page volume offers a focused overview of the clinical practice and scientific foundations of geriatrics and gerontopsychiatry. Written for physicians, mental‑health professionals, and students, it addresses the unique physiological, psychological, and social challenges that arise in the aging population. Topics include assessment of cognitive decline, management of mood and anxiety disorders in older adults, pharmacological considerations, and interdisciplinary care strategies. The text balances theoretical insight with practical guidance, featuring case studies and evidence‑based recommendations that reflect contemporary French‑language research. Though compact, it serves as a handy reference for both seasoned clinicians and those entering the field, emphasizing the importance of holistic, patient‑centered approaches to elder care.