Podiatrists, also known as doctors of podiatric medicine (DPM), focus on the diagnosis and treatment of disorders of the foot, ankle and lower leg. Conditions can range from bunions and heel spurs to congenital abnormalities and ankle and foot injuries. Practitioners can focus on primary care or on specialties such as sports medicine, pediatrics, orthopedics or geriatrics. Podiatrists also can diagnose and treat foot ailments related to diabetes, arthritis and other illnesses. Diagnostic tools include X-rays and laboratory tests, followed by treatments such as medication, physical therapy, orthotics and casts.