Neural Therapy

This page is for general educational purposes and does not provide medical advice, diagnosis, or a treatment recommendation.

Neural Therapy: Low-Dose Local Anesthetic Injections for Pain

Neural therapy is an injection approach that uses small amounts of local anesthetic—most often procaine or lidocaine—at scars, trigger points, nerves, or other selected sites. It is offered mainly for chronic pain. Some individual injection techniques overlap with conventional pain medicine, but the broader neural-therapy theory and treatment maps are not established standards of care in the United States.

How It Is Performed

A clinician takes a history, examines painful areas and scars, and selects one or more injection sites. Injections may be shallow under the skin, into a trigger point, near a nerve, or around a joint. Deeper injections near major nerves, blood vessels, the chest, or the spine require specific medical training and often imaging guidance.

Proposed Mechanism

Local anesthetics temporarily block nerve-signal transmission and can reduce pain. Neural-therapy practitioners also propose that low-dose anesthetic may interrupt abnormal autonomic or inflammatory signaling. These broader mechanisms remain under study, and improvement after numbing an area does not by itself prove that a distant “interference field” caused the condition.

What the Evidence Shows

A 2023 scoping review identified a broad literature on therapeutic low-dose local anesthetics, but much of it consisted of observational studies, case reports, or condition-specific injection research rather than rigorous trials of neural therapy as a complete system. A retrospective study reported durable improvement in referred patients with refractory chronic pain, but it lacked a randomized control group. Evidence is stronger for certain established nerve blocks or trigger-point injections than for claims that neural therapy treats many unrelated diseases.

Risks and Limitations

Common effects include brief burning, numbness, bruising, bleeding, dizziness, and temporary pain flare. Less common but serious complications can include infection, allergic reaction, nerve injury, seizure or heart-rhythm problems from local-anesthetic toxicity, punctured lung, or accidental injection into a blood vessel. Risk depends heavily on dose, location, technique, and the clinician’s training.

Tell the clinician about blood thinners, allergies, pregnancy, heart or liver disease, prior reactions to anesthetics, and all medicines and supplements. New weakness, loss of bladder or bowel control, fever, major trauma, or other red-flag symptoms require medical evaluation rather than empiric injections.

What to Expect

Some patients notice immediate numbness or pain reduction; that effect may fade as the anesthetic wears off. A provider may recommend a series, but the number and interval should be tied to measurable goals. Before continuing, agree on what counts as meaningful improvement and when to stop.

Questions to Ask a Provider

What diagnosis are you treating, and why is this injection site appropriate?
Which drug, concentration, and total dose will you use?
What evidence supports this technique for my condition?
What training do you have for this injection, and will imaging guidance be used?
What complications require urgent care?
How will we measure benefit, and when will we stop if it is not helping?