There are 3 main types of back pain: acute back pain, subacute back pain, and chronic pain. Knowing which type you have will help to determine how to treat it:

• Acute back pain: Acute back pain typically lasts up to 4 weeks. It’s usually caused by a specific activity such as falling down or lifting a heavy box. 
• Subacute back pain: Subacute back pain typically lasts from 4 to 12 weeks. You should visit a doctor if you believe you have subacute back pain because it could lead to chronic pain. 
• Chronic pain: Chronic pain usually lasts longer than 12 weeks. Unlike acute back pain, it’s hard to identify specific accidents or causes of the pain.