With the global population of individuals aged 65 and older projected to nearly double by 2050, the importance of geriatric healthcare continues to grow. Age-related nail disorders are common in this demographic, often signaling physiological aging or underlying health conditions. These disorders may lead to functional limitations, cosmetic concerns, and psychosocial distress, underscoring the need for awareness and effective management strategies. This chapter offers a comprehensive overview of age-related nail changes and disorders, focusing on morphologic variations in nail plate contour, color, growth rate, surface texture, and thickness. The pathogenesis and clinical features of these changes are explored, including issues such as onychomycosis, nail brittleness, and more severe conditions like squamous cell carcinoma and melanoma. Special consideration is given to psychosocial impacts, such as nail-biting disorders, which affect quality of life and may require behavioral interventions. Additionally, the chapter discusses conservative and interventional treatment options tailored to the geriatric population, including pharmacologic and laser-assisted therapies. This chapter aims to support clinicians in diagnosing, managing, and preventing nail disorders in older adults, ultimately improving patient outcomes and quality of life.