A chiropractic adjustment typically does not hurt. Most people feel pressure and hear a popping or cracking sound during the procedure, but the sensation is closer to relief than pain. Some mild soreness afterward is common, similar to what you might feel after a workout, and it usually fades within 24 hours.
What It Actually Feels Like
During a manual adjustment, the chiropractor applies a controlled, quick thrust to a specific joint. You’ll feel pressure building in that area, then a sudden release. The most noticeable part for most people isn’t pain but the popping sound, which can be startling if you’re not expecting it. Some joints pop louder than others, and some adjustments produce no sound at all.
The sensation during the thrust itself lasts less than a second. Many people describe immediate relief or a feeling of looseness in the joint afterward. If you’re already in significant pain from a back or neck issue, the positioning required to set up the adjustment can be uncomfortable, but the thrust itself is typically quick enough that it doesn’t register as painful.
Why Your Joints Pop
That cracking sound is not your bones grinding together. Your joints are surrounded by fluid that lubricates them, and when the joint surfaces are pulled apart quickly, a gas-filled cavity forms inside the fluid. This rapid cavity formation produces the popping noise. It’s the same mechanism behind cracking your knuckles.
A 2015 study using real-time MRI imaging confirmed that the sound comes from a cavity forming, not from a bubble collapsing (which was the older theory). The process is called tribonucleation: two surfaces resist being pulled apart until they hit a critical point, then separate rapidly, creating a gas cavity. This is why you can’t crack the same joint again immediately. The cavity needs time to reabsorb before the effect can be repeated.
Soreness After the Adjustment
Mild soreness in the area that was adjusted is the most common side effect. According to the Cleveland Clinic, this soreness generally resolves within 24 hours and becomes less likely to occur at all once you’ve had a few sessions. Think of it like the dull ache after a deep tissue massage. The muscles surrounding the adjusted joint may have been stretched or moved in ways they’re not used to, and they need a short window to settle.
Applying ice to sore areas, staying hydrated, and doing some light movement (like walking) can help the soreness pass more quickly. If you’ve never had an adjustment before, expect the first visit to produce more post-treatment achiness than subsequent ones.
When It Might Hurt More
Certain situations can make an adjustment more uncomfortable than usual. If you’re coming in with acute inflammation, like a freshly injured disc or a muscle spasm that’s been building for days, the area is already sensitized. Positioning the body for the adjustment can be the uncomfortable part, not necessarily the adjustment itself.
People with significant muscle tension often involuntarily tense up during the procedure, which can increase discomfort. Staying as relaxed as possible, breathing out during the thrust, and communicating with your chiropractor about your pain levels makes a real difference. If a particular position hurts, say so. Chiropractors can modify their approach, use different angles, or switch techniques entirely.
Instrument-Assisted vs. Manual Adjustments
If the idea of a manual thrust makes you nervous, instrument-assisted techniques offer a gentler alternative. The most common is a spring-loaded handheld device that delivers a quick, low-force impulse to the joint. There’s no twisting or positioning, and the force is much lighter than a manual adjustment. Most people feel only a light tapping sensation.
An observational study comparing manual manipulation to instrument-assisted treatment for low back pain found that manual adjustments actually produced a larger reduction in pain scores at four weeks (roughly 1 to 2 points more on a 10-point pain scale). Both approaches improved function at similar rates. So instrument-assisted methods are effective, but if pain relief is the primary goal, manual adjustments may have a slight edge. The tradeoff is that the manual version involves more physical sensation during the procedure itself.
Serious Risks to Know About
Serious adverse events from chiropractic adjustments are rare but real. The most well-documented risk involves neck adjustments, where rotational manipulation can damage the vertebral artery. This happens when the artery’s inner lining tears from being overstretched, most commonly at the joint between the first and second vertebrae. People with pre-existing vascular conditions, hardened arteries, or abnormal blood vessel structure face higher risk.
This is not a routine complication. But it’s the reason many practitioners now screen patients for cardiovascular risk factors before performing cervical adjustments. If you have a history of vascular disease, blood clotting issues, or stroke, make sure your chiropractor knows before any neck work. For the vast majority of patients, spinal adjustments produce nothing more than temporary soreness and that distinctive pop.