Common causes of foot pain include heel fat pad atrophy or inflammation, heel bone spurs, plantar metatarsal fasciitis and other diseases. 1. Fat pad atrophy or inflammation: heel fat pad atrophy or inflammation, mainly seen in obese patients. If the patient is stimulated, resulting in a fat pad atrophy foot support to relieve the pressure weakened, it may be the fat pad atrophy or inflammation. If prolonged activity, it may also cause pain on the bottom of the foot. 2. Heel bone spurs: some patients have heel bone spurs, may also appear foot pain. It usually occurs when the bone spur irritates the surrounding soft tissues after walking, which triggers pain on the bottom of the foot. 3. Plantar fasciitis: If the patient has pain in the ball of the foot, it may also be caused by plantar fasciitis. If the patient stands and walks for a long time, overwork may occur plantar fasciitis, which may cause inflammation and irritation, resulting in pain in the soles of the feet. Patients with plantar pain usually need to undergo various tests to clarify the diagnosis before treatment.