The plantar fascia is a tight band of tissue that supports the arch and stops the foot collapsing. When it is damaged it gets sore where it joins the heel bone. The pain is usually worst after you have been resting especially getting up in the morning and eases off with gentle stretches or walking. It usually goes in time with rest and using anti-inflammatory painkillers but generally we can’t keep off our feet for long enough to allow the area to settle.
Gentle calf stretches on the edge of a step will help relieve the pain especially first thing in the morning or after you have been sitting for a while. Rolling the heel and arch on a chilled water bottle or spiky ball can also be really helpful.
A steroid injection from your GP or other treatments such as acupuncture, laser therapy or manipulation may be used in more severe cases.