Principles of Geriatric Medicine: Core Concepts in Aging, Polypharmacy, Frailty, and Multimorbidity Management

An older adult who comes in with weakness, poor appetite, dizziness, falls, forgetfulness, or reduced mobility may not have one simple medical problem. They may be living with frailty, diabetes, heart failure, chronic kidney disease, medication side effects, depression, early cognitive decline, and a level of functional loss that can quickly threaten independence.

That is why geriatric medicine requires a different kind of clinical thinking.

The goal is not simply to diagnose more conditions or prescribe more medicines. It is to understand how aging changes presentation, how chronic illnesses interact, how treatment can sometimes cause harm, and how to create care plans that protect function, safety, dignity, and quality of life.

Principles of Geriatric Medicine is a practical clinical guide for medical students, residents, physicians, nurses, nurse practitioners, physician assistants, pharmacists, rehabilitation professionals, and healthcare trainees who want a stronger foundation in caring for older adults.

This book focuses on the everyday realities of aging care: frailty, falls, polypharmacy, dementia, delirium, chronic pain, mobility decline, malnutrition, incontinence, depression, caregiver stress, and multimorbidity. It helps readers move beyond isolated disease management and develop a whole-person approach to complex older patients.

Inside, readers will find practical guidance on:

• Core principles of healthy aging, frailty recognition, functional assessment, and independence preservation
• Polypharmacy review, deprescribing, medication safety, adverse-effect recognition, and treatment prioritization
• Multimorbidity management when several chronic diseases and competing treatment plans affect the same patient
• Falls prevention, gait problems, sarcopenia, mobility loss, rehabilitation planning, and disability reduction
• Dementia, delirium, depression, anxiety, sleep concerns, and cognitive assessment in later life
• Common geriatric syndromes including malnutrition, chronic pain, constipation, continence problems, sensory decline, and pressure injury risk
• Management of heart failure, diabetes, COPD, kidney disease, arthritis, osteoporosis, and other chronic disorders in older adults
• Communication with patients, families, caregivers, and multidisciplinary care teams
• Advance care planning, goals-of-care discussions, palliative support, long-term care, and hospital-to-home transitions

What makes this book valuable is its realistic clinical focus. Older adults do not always present with textbook symptoms. Infection may appear as confusion. Medication toxicity may appear as a fall. Heart failure may first appear as fatigue, poor appetite, or sudden loss of mobility. A small illness can become a major turning point when frailty and chronic disease are already present.

Principles of Geriatric Medicine helps readers recognize what matters most, avoid treatment-related harm, simplify complex decisions, and create care plans that fit the patient’s real life—not only the diagnosis list.

Whether you are preparing for clinical rotations, beginning residency, working in primary care, hospital medicine, nursing, rehabilitation, long-term care, or community health, this book provides a clear and practical foundation for safer, more thoughtful, and more compassionate geriatric care.