Quiet is not the same as capable.
Three pieces this week that fit together more neatly than usual. What a twitch actually buys you, where to aim the needle when time and tolerance are short, and part two of the headache series, where we look at what an occipital nerve block does and what it cannot do. The thread running through all three is the difference between making something quiet and making it capable. Three focuses, same as always: the framework and the safety inside it, the model underneath it, and one clinical application you can use Monday.
Ask a room of clinicians what the local twitch response actually is and you will get ten answers. Here is the one that matters clinically: it is a spinal cord reflex, and when you get a clean one, you have confirmation that the nervous system heard you. I describe it in courses as the plug going into the wall socket. The language of the nervous system is electricity, and the twitch is where you get access to that conversation. Add electrical stimulation on top and you are micro-dosing current through that access point, dosed to a comfortable and tolerable muscle contraction rather than to whatever number is on the dial. The mechanism underneath is incomplete but it is not mysterious. Cagnie's group showed that needling the trapezius increases muscle blood flow and oxygenation. Shah's microdialysis work showed that the biochemical neighborhood around an active trigger point is genuinely inflamed and acidic, and that it changes. Space, blood, and movement.
Now the discipline part, because this is where good clinicians get greedy. More twitches are not better. What I do not recommend is trying to twitch a tissue out, because it gets very uncomfortable and you are spending patient tolerance that you are going to want for the loading. Our consensus puts numbers on it. High irritability with low tolerance is one to two pistons, or stop at the first twitch. Low irritability with high tolerance is where you can go to ten or twenty passes and multiple responses per tissue. The dose comes from the patient in front of you, not from the muscle under your fingers.
Chase the response, not the count. One clean twitch, current dosed to a visible and comfortable contraction, then stop and reassess. If you cannot verify a change from the twitch you already got, more twitches are not going to rescue it.
This is one of the most practical things I teach, and it changes how you spend a treatment. Think of it as brawn versus brains. The glute max is brawn. It is enormous, it makes force, and it largely does what it is told. The deep segmental muscles and the suboccipitals are the brains of the system, dense with muscle spindles, wired for position sense and fine regulation rather than power. A muscle packed with spindles has an outsized say in what the nervous system believes about that region. So when your patient has limited time and limited tolerance, and they always do, you spend the needle where the system has the most sensors, not where the tissue is biggest or where it happens to be sorest.
There is direct evidence that the target choice matters. Schneider's group needled the gluteus medius and measured strength and activation, and found immediate change in both. That is the whole point. You are not kneading a knot out of a muscle, you are changing what the nervous system does with that segment. And our consensus is explicit about where peripheral targets come from: manual muscle testing, range of motion, flexibility, pain provocation, and diagnosis-specific tests. Palpation confirms the target. It does not choose it. The sorest spot is a candidate, not a diagnosis.
Pick your targets by their influence on the system rather than by their tenderness. Before you needle the biggest, sorest muscle in the region, ask which tissue there has the most say over that segment. Then reassess and find out whether you were right.
Last issue established that the neck is measurably inside a headache. Here is the part that should get your attention: medicine already knows, and it is already putting a needle there. Two papers this month, both on occipital nerve blocks. In the first, 50 patients with chronic migraine received either a greater occipital nerve block or a sphenopalatine ganglion block. Both reduced monthly migraine days, pain intensity, and disability, and the occipital block produced the larger drop in migraine days. In the second, 28 adolescents whose migraine had failed preventive medication received greater and lesser occipital nerve blocks, three sessions at eight-week intervals. Monthly migraine frequency fell from 14.4 days to 4.7. Pain fell from 7.7 to 3.3. Adverse effects were mild and transient.
Both studies are retrospective and uncontrolled, so hold those numbers loosely. But notice what they are telling you. When the profession wants to break a refractory headache, it goes to the occipital nerve, which sits in the same suboccipital tissue we were talking about in focus two. That is not a threat to what we do. It is the strongest confirmation of the target we could ask for. Here is the distinction that matters. A block makes the nerve quiet. Botox makes the muscle quiet. Neither one builds capacity. I had a patient come to me after 19 Botox injections. Her pain was gone, and she was in a cervical collar to hold her head up, because the muscles that were supposed to do that job had been chemically switched off. Pain gone, function gone. A needle that produces a twitch and then gets loaded is a completely different bet, because you are trying to make the tissue capable rather than quiet.
When a headache patient tells you they have had blocks or Botox, do not treat that as competition and do not treat it as failure. Ask what happened to their capacity, and then test it. Deep neck flexor endurance, scapular and upper trap strength, cervical range under load. Then screen the segment, treat the tissue you are trained and cleared to treat, verify the change, and load it before they leave. The injection bought them a window. Your job is to use it.
You stopped counting twitches years ago.
You already dose off the patient instead of the protocol, and you already know the suboccipitals give you more per needle than the big muscle sitting next to them. Here is the one worth checking this week. Take a headache patient who has had a nerve block or Botox and actually test their capacity rather than their pain. Deep neck flexor endurance, scapular and upper trap strength, cervical range under load. My gut says you will find a comfortable, quiet neck that cannot hold a position, and that is a conversation nobody has had with them yet. Then show a younger clinician the difference between a neck that stopped hurting and a neck that got stronger. That distinction is most of our value, and it is the one patients have never had explained to them.
A block makes the nerve quiet. Botox makes the muscle quiet. A needle that twitches and then gets loaded makes the tissue capable. Quiet is not the same as capable, and only one of them lasts.
If you treat headaches, or you supervise people who do, forward this one. The difference between quiet and capable is worth a hallway conversation, and most of our patients have never had it explained to them.
