Acute Versus Chronic Pain
Acute pain can range from mild to severe in intensity. It is the most common form of back pain. Subacute pain is defined as pain that generally lasts more than a week and as long as a few months.
Approximately ten to 20 percent of back and neck pain falls into the subacute category. Chronic pain refers to pain that lasts generally more than three months. It can also range from to mild to severe in intensity. Persistent chronic pain is the least common form of back pain accounting for approximately five.