What’s wrong with a sudden pain in the back of my foot, like I’ve twisted a hamstring?

Sudden pain in the back of the foot like twisting a tendon is usually due to fasciitis, osteophytes, gouty arthritis and other reasons.
1. Fasciitis: Fasciitis is an inflammation that occurs in the myofascia, which is usually caused by excessive muscle pulling, overstrain and other reasons, and may cause sudden back pain like twisting a tendon. It is recommended to rest and avoid foot stress.
2. Osteomalacia: Osteomalacia, also known as osteoarthrosis, is a natural degeneration of the joints, usually due to wear and tear of the joint cartilage, trauma and other reasons, this degeneration may cause sudden pain in the back of the foot like twisting a tendon. Oral medication such as glucosamine sulfate can be taken to slow down the degeneration of articular cartilage.
3. Gouty arthritis: Gouty arthritis is a disease and inflammatory reaction triggered by the deposition of uric acid crystals, usually due to dietary reasons leading to high uric acid, overwork, cold and flu triggered, may be accompanied by general weakness and other symptoms. It is recommended that the nephrology department specializes in the treatment.
If the pain persists without relief, it is recommended that the patient go to the hospital in time for examination and comprehensive treatment under the guidance of the doctor.