Plantar fasciitis is a common foot condition that causes pain in the heel and arch of the foot. The pain is often worse upon waking or after periods of rest and can range from mild to severe. It is caused by factors like flat feet, high arches, injury, overuse, or poor footwear. Treatment involves rest, stretching exercises, orthotics, night splints, ice, and supportive footwear. Recovery may take time as multiple interventions are often needed and the condition can reoccur.