Plantar fasciitis takes several weeks to months to heal, as stated by Kaiser Permanente. The condition usually heals on its own with plenty of rest and care.
Overstretching the plantar fascia leads to irritation and tearing of the ligament. This leads to pain and inflammation where the ligament attaches to the inside of the heel. The pain is usually present whenever the sufferer puts weight on their foot, which can limit mobility. Despite this problem, plantar fasciitis is not considered serious, as stated by Kaiser Permanente.
The condition can take anywhere from several weeks up to a full year to heal, but most do recover. The key is getting enough rest and keeping weight off of the foot while the ligament is healing. Wear supportive and corrective footwear to cushion the bottom of the foot and fix improper mechanics that may have led to the condition. Avoid repetitive sports activities or standing on the feet for most of the day. Gently stretch the Achilles' tendon and calf muscles to help length the ligaments and muscles while healing. Ice down the bottom of the heel for a few minutes, multiple times throughout the day.
Sufferers may want to consider getting cortisone injections to reduce inflammation and encourage healing. There are also surgical options for patients who don't see any improvement after 6 to 9 months. Recovery from surgery can take between 4 months to 1 year.