In short
Pain on the outside of the elbow from overusing the forearm tendons, and most people who get it have never played tennis. It usually improves with rest over weeks, but it can run past a year, and load management beats total rest.
Emergency if: Being unable to use the arm or bear any weight on it, or an obvious deformity of the joint after an injury — seek emergency care now.
On your report
CRP, ESR, Uric Acid, Rheumatoid Factor (RA Factor) +1 more
On this page
01
What is going on at the elbow
Tennis elbow, or lateral epicondylitis, is a problem with the tendons attaching the forearm muscles to the bony bump on the outside of the elbow. Repeated use produces small tears in the tendon, and over time the tendon struggles to heal, leaving irritation and pain where it meets the bone. Descriptions vary between inflammation and a failure of repair, and both capture part of a slow, overload-driven process.
The practical consequence of it being a tendon problem is patience. Tendons have a modest blood supply and remodel slowly, which is why this does not behave like a pulled muscle that is fine in a fortnight.
02
Who gets it
Anyone can, but it is most common between about 35 and 54. Racket sports are the origin of the name and a minority of the cases: painters, plumbers, construction workers, cooks and butchers all feature, and so do computer work such as typing and using a mouse, manual tasks like sewing or using a screwdriver, and playing a musical instrument.
Sometimes there is no identifiable cause at all. The common thread when there is one is repetition with a gripping or wrist-extending action, rather than a single heavy effort.
03
How it presents
The main symptom is pain on the outside of the elbow, ranging from mild discomfort on moving the arm to constant pain that disturbs sleep. It is worse on lifting or bending the arm, gripping objects, and moving the wrist. There may be tenderness or swelling at the elbow, pain running into the forearm, and difficulty straightening the arm fully.
A weak grip is common and worth naming, because people often notice they are dropping things or struggling with a kettle before they connect it to the elbow. Pain when the tendon is pressed just over the outside of the elbow, and pain when bending the wrist back against resistance, are what an examination looks for.
04
Managing the load rather than stopping everything
The first step is to reduce or modify whatever provokes it, typically for a few weeks. That is different from immobilising the arm: continuing to move it gently through range, while cutting the aggravating load, is what is advised. Simple bending and straightening exercises are part of early care.
Paracetamol or an anti-inflammatory gel rubbed into the area eases pain, and a hot or cold pack wrapped in a towel for up to twenty minutes every few hours helps. A forearm strap or elbow brace worn on the upper forearm takes some pull off the tendon and is inexpensive. If you use an ibuprofen gel, keep away from naked flames, since it is flammable on the skin.
05
The timeline, honestly
Most tennis elbow gets better after resting the arm for a few weeks, but it can last considerably longer, and in some people it runs past a year. Knowing that in advance prevents the common cycle of resting for ten days, feeling better, returning to full load, and restarting the whole thing.
If symptoms have not improved after about six weeks of home treatment, physiotherapy is the next step — stretching and progressive strengthening of the wrist and forearm, alongside massage and sometimes ultrasound. Surgery is considered only when the problem is still there after six to twelve months, and most people never reach that point.
06
Setting things up so it does not return
Fix the cause rather than only the elbow. For a desk-based job that means reviewing the chair, desk and mouse; a wrist support or a different mouse shape can be enough. For a sport it means checking technique and equipment, including grip size, and thinking about how often you play and whether to build up more gradually.
Do not try to work through the pain. When a particular movement hurts, stopping that movement at the time is the right response, and continuing can cause further harm. See a doctor if the pain is still there after a couple of weeks of rest and self-care, if this is the first time you have had these symptoms, or if there is severe pain, marked swelling or bruising, an inability to use the arm, or an obvious deformity.
When to act
Routine — see a doctor
Pain on the outside of the elbow after repetitive use: reduce the aggravating activity, keep moving gently, use a strap and pain relief, and see a doctor if it is still there after about two weeks.
Same-day — call promptly
Severe pain, swelling or bruising after an injury to the elbow, or pain and swelling that are not settling after a few days.
Emergency — act now
Being unable to use the arm or bear any weight on it, or an obvious deformity of the joint after an injury — seek emergency care now.
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Sources
- Tennis Elbow — NHSnhs.uk
- Sports Injuries — NIAMSniams.nih.gov
- Sports Injuries: Diagnosis, Treatment, and Steps to Take — NIAMSniams.nih.gov
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