A stubborn muscle knot may sit in your neck after long hours at a screen, near your shoulder blade, or in your low back after lifting or driving. Stretching, heat and massage can help for a while, then the same spot tightens again. Knowing how trigger point injections work can help you decide whether to ask about one.
What is a trigger point?
Trigger points are small knots in a muscle that hurt when you press on them. The pain can show up at the spot itself or a short distance away, which is called referred pain.
That referred pain is why muscle knots can be confusing. A tight spot in the neck can feed a headache. A knot near the shoulder blade can send symptoms toward the arm, and tightness in the low back can make the hip feel involved.
These knots can form when a muscle is tensed over and over. Mayo Clinic lists repeated motions at work or in hobbies, stress-related muscle tension, poor posture and weak muscles among the causes.
How do trigger point injections work?
The injection goes straight into the irritated spot. At our clinic it is typically a small amount of local anesthetic, often 1% lidocaine, mixed with saline.
The aim is to calm the sensitive muscle fibers so the muscle can relax and move more comfortably.
What can it feel like?
You may feel a quick pinch or some pressure. As the needle reaches the tight band, the muscle may give a brief twitch. Clinicians call this a local twitch response.
What about afterward?
Soreness at the injection site is expected in most cases and usually settles within three to four days, according to a clinical review of trigger points.
The same review encourages staying active and moving the muscle through its full range in the week after, while avoiding strenuous activity for the first three to four days. Your provider gives you simple guidance for the rest of the day.
When might an injection be worth discussing?
It may be worth asking about when the same sore spot returns, limits your motion, or sends discomfort into nearby areas, and home care has not helped enough.
An injection is not needed for every tight muscle. The exam checks whether the pain comes from a trigger point or from a joint, disc, nerve or tendon.
What happens at a visit?
Your provider reviews your symptoms, your history and your daily routine. They ask when the discomfort began, what makes it worse, and whether it stays in one place or travels.
Your provider then looks for the specific tender band and what may be keeping it active. If an injection fits, they explain what it involves and how it connects to the rest of your plan.
Why does follow-through matter?
An injection can calm a knot, but the posture, workload or movement habit that irritated it can do so again. Follow-through may include stretching, strengthening, guided rehab or chiropractic care, depending on what is driving the pattern.
Next step for a stubborn knot
If the same knot keeps limiting your routine, read what a trigger point injection visit involves at our clinic.
Ready to take the next step?
Talk with the Advanced Pain Solutions team about a trigger point injections plan built around your goals.