When the first few steps out of bed in the morning cause severe pain in the heel of your foot, you may have plantar fasciitis (fashee-EYE-tiss). Plantar fasciitis is the most common cause of heel pain and is an overuse injury affecting the sole (plantar) of the foot. A diagnosis of plantar fasciitis means you have inflamed the tough, fibrous band of tissue (fascia) that connects your heel bone (calcaneus) to the base of your toes.

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