Recovery After an Injection: Tips, Precautions, and Timelines
Published on 2026-05-21
After an Injection: The Golden Rules for Optimal Recovery
Whether you have received a cortisone, PRP, hyaluronic acid injection, or alcoholization for Morton's neuroma, the post-injection period is crucial to maximize results and minimize risks. Here are the recommendations from Dr. Bolduc based on the most recent scientific data.
The First 24 to 48 Hours
DO:
- Relative rest of the treated area for 24 to 48 hours
- Ice application (10-15 minutes every 2-3 hours) if swelling occurs
- Monitor the injection site (redness, warmth, excessive pain)
- Adequate hydration
DON'T:
- Do not take hot baths, saunas, hot tubs, or swim for 48 hours (infection risk)
- Do not apply heat to the injected area
- Do not massage or manipulate the treated area
- Avoid anti-inflammatories (NSAIDs) after PRP injection (they reduce growth factor action)
- Avoid alcohol for 24 hours
The Famous "Flare Reaction"
A local inflammatory reaction (pain, swelling, warmth) in the first 24 to 72 hours is normal, particularly after cortisone or PRP injections. This reaction, called a "flare reaction", is a sign that the product is starting to work. It usually resolves within 24 to 48 hours. If in doubt, contact your doctor.
Resuming Activities
- Walking and daily activities: can resume immediately, but without excess
- Office work: generally the same day or the next day
- Physical labor: 2 to 7 days depending on the type of injection and area treated
- Sports: 48 hours to 14 days depending on the injection type (cortisone: 2-7 days, PRP: 2-14 days, hyaluronic acid: 24-48 hours)
- Driving: possible once you feel comfortable, but be cautious after hip injections
A gradual return to activity, supervised by a physiotherapist when possible, is recommended for the best long-term outcomes.
Frequently Asked Questions
Can I drive after an injection?
Driving is generally possible after a knee, shoulder, or elbow injection, as soon as you do not feel any discomfort. For a hip injection (right hip if you drive on the right), it is better to be accompanied. When in doubt, do not drive.
Should I stop anti-inflammatories before an injection?
It depends on the type of injection. For a cortisone injection, NSAIDs can be continued. For PRP, they must be stopped 7 days before and 2 weeks after the injection. Follow your doctor's recommendations.
How long after an injection can I resume sports?
For cortisone: 48 hours to 7 days depending on the area. For PRP: 48 hours to 14 days depending on the pathology. For hyaluronic acid: 24 to 48 hours. Return should be gradual and supervised by a physiotherapist.
Can I shower after an injection?
Yes, showering is allowed as soon as you return home. Hot baths, pools, and hot tubs are not recommended for 48 hours to avoid infection risk at the puncture site.
Does the injection cause weight gain?
A localized cortisone injection has no significant effect on weight. Systemic side effects are rare and occur mainly after high doses or repeated injections. Diabetics should monitor their blood sugar for a few days.