The concave area in the middle of the foot is the plantar area, and plantar pain can be caused by a variety of reasons, such as plantar fasciitis, gout, and flatfoot syndrome.
1. Plantar fasciitis: aseptic inflammation formed by repeated micro-injuries to the plantar fascia, common symptoms of plantar and heel pain.
2. Gout: If gout stones are deposited in the plantar joints, it can cause pain and swelling in the plantar joints. Most of the sudden onset at night. The skin surface may be red and purple, tense and shiny.
3. Flatfoot syndrome: patients with low arch, X-ray may show longitudinal arch collapse, talar inversion, heel valgus, etc., there is a certain hindfoot valgus, when standing or walking for a long time, it may manifest as plantar pain.
There may be other causes of plantar pain such as plantar fibroma, etc. If symptoms occur, it is recommended to go to a specialist hospital in time to avoid delay.