Acute pain is pain with a fresh cause, and it goes away as the cause heals, usually within days to weeks and rarely past three months. Chronic pain is pain that lasts longer than three months, past the point at which the original injury should have healed. The two feel different, behave differently and need different treatment, so working out which one you have is the first thing our physicians do at a consultation.
Acute pain: the body's alarm
Acute pain follows an injury, an operation or an illness. It starts quickly, has an obvious cause, and tends to be sharp. A sprained ankle, a pulled muscle in the lower back, a broken bone or a kidney infection all produce it, and in each case the pain is doing a job: it tells you something is damaged and makes you protect it while it heals.
The defining feature of acute pain is that it fades as the tissue recovers. Treatment keeps you comfortable and mobile while the body does the repair: a short course of anti-inflammatory or other medication, ice or heat, activity that is modified but not stopped, and sometimes an injection to settle a muscle spasm so you can move again. Treated well, acute pain usually resolves completely. Ignored, or managed by keeping still for too long, it is more likely to turn into the second kind.
Chronic pain: when the alarm keeps ringing
Sometimes chronic pain is driven by an ongoing condition such as arthritis, a damaged nerve, or a disc that keeps irritating a nerve root. Sometimes the original cause has resolved and the nervous system has become sensitized, so it keeps sending pain signals with nothing left to protect.
Chronic pain is more often dull, burning or aching than sharp, and it may not have a clear location. It usually brings fatigue, poor sleep, low mood and stress with it, and a slow shrinking of what a person does: movement hurts, so they move less, so muscles weaken, so movement hurts more. It is real and it is measurable. It also does not respond to acute-pain treatment. Rest makes it worse and repeated short courses of medication do not fix it. It needs a longer plan that treats the source where there is one and retrains the nervous system where there is not.
Why the distinction changes the treatment
Take two people with lower back pain. One hurt her back lifting a suitcase a week ago. The other has had back pain for two years. They may describe it with the same words, and their doctors should do very different things.
For the first, the plan is short: confirm nothing serious is going on, control the pain for a couple of weeks, keep her walking, and expect a full recovery. Imaging is usually unnecessary. For the second, the plan starts with a proper search for the cause, which may include imaging and a careful nerve examination, followed by treatment measured in months. That might combine medication management at the lowest effective dose, targeted injections or nerve blocks, weight loss if extra weight is loading the spine, and a graded return to activity. Progress is measured in function as much as in pain scores: sleeping through the night, walking further, getting back to work.
Treating chronic pain as if it were acute, with rest and repeated prescriptions, is the most common reason people arrive at a pain practice years into a problem that could have been managed earlier. Treating acute pain as if it were chronic, with heavy intervention for something that would have healed, wastes time and carries its own risks.
Signs that pain has become chronic
- It has lasted more than three months, or well past the expected healing time for the injury.
- It is there most days, even if the intensity varies.
- It has changed character, from sharp to aching, burning or tingling.
- It affects sleep, mood, concentration or relationships.
- You have started avoiding activities you used to do without thinking.
If several of these apply, it is time to be evaluated rather than to keep waiting for the pain to go away on its own. Our chronic pain page explains how it is evaluated and treated.
How a consultation works at AffordaHealth
We see both kinds every day at our Davie and Boynton Beach clinics: acute pain from a fall, a sports injury or a car accident, and chronic pain from arthritis, neuropathy, old injuries and years of wear. The first visit is the same in one respect. The doctor listens, examines you, and finds the source before prescribing anything. From there the plans diverge, because the problems are different. If your pain is new and not settling, or old and never properly explained, book an appointment online, or call either clinic.
Questions patients ask
How long does acute pain last?
Days to a few weeks in most cases, and rarely more than three months. It fades as the injured tissue heals. Pain that persists beyond three months is defined as chronic.
Is chronic pain real if the scan looks normal?
Yes. Chronic pain is real and measurable. When the original injury has healed, the nervous system itself can stay sensitized and keep producing pain signals. Treatment then aims to retrain that response as well as treating any remaining source.
Do I need an MRI for back pain?
Usually not for a recent muscular injury, which is expected to heal within weeks. Imaging becomes useful when pain has lasted months, runs into a leg, or comes with numbness or weakness, because then the physician is looking for a disc, joint or nerve source.
Which doctor should I see for chronic pain in Davie or Boynton Beach?
A pain management physician. At AffordaHealth, Dr. Irvine Mason is double board-certified in pain management and neurology, and Dr. Charley Scheim treats neurology and chronic pain. Both clinics accept Medicare, Aetna, Blue Cross Blue Shield and Cigna.