Chiropractic care is generally safe when performed by a licensed practitioner on an appropriate candidate. Most people experience no side effects at all, and when side effects do occur, they’re typically mild: soreness, headaches, or fatigue that resolves within a few days. Serious complications exist but are rare, with the most cited risk, arterial injury in the neck, estimated at roughly 1 in 20,000 spinal manipulations.
Common Side Effects After an Adjustment
The most frequent complaints after a chiropractic visit are temporary soreness in the area that was treated, mild headaches, and feeling tired. These reactions are similar to what you might feel after a deep-tissue massage or a new exercise routine, and they typically clear up within one to three days without any treatment. They’re considered a normal response to having joints and surrounding tissues mobilized.
Not everyone gets these side effects. Many patients feel immediate relief or no change at all after a session. When soreness does show up, it tends to happen most after your first few visits, then becomes less common as your body adapts to treatment.
The Rare but Serious Risk: Neck Adjustments
The most significant safety concern with chiropractic care involves high-velocity manipulation of the neck. In rare cases, this can cause a tear in one of the vertebral arteries, the blood vessels that run through the cervical spine and supply the brain. That tear, called a dissection, can lead to stroke. The estimated frequency is about 1 in 20,000 neck manipulations, according to data cited by the American Heart Association.
There’s an important nuance here. Some researchers have pointed out that patients often visit a chiropractor because they already have neck pain or headaches, which can themselves be early symptoms of an arterial dissection already in progress. This makes it difficult to determine whether the manipulation caused the dissection or whether the patient was already developing one before the visit. Regardless, the risk is real enough that your chiropractor should discuss it with you before performing neck adjustments, and you should feel comfortable asking about alternative techniques if this concerns you.
How Chiropractors Screen for Safety
A responsible chiropractor won’t just start adjusting you on your first visit. Before any treatment, you should go through a comprehensive intake that includes a detailed health history, a physical exam, and specialized tests. The physical exam typically covers posture analysis, range of motion, muscle strength, reflexes, and neurological responses. Orthopedic and neurological tests help identify problems like nerve compression, disc issues, or joint restrictions.
This screening process also serves to rule out serious underlying conditions that would make manipulation dangerous or require a referral to a medical doctor. If your chiropractor skips this step and moves straight to treatment, that’s a red flag worth paying attention to.
Who Should Avoid Chiropractic Care
Certain conditions make spinal manipulation risky or outright inappropriate. Severe osteoporosis is one of the most important, because bones weakened by significant mineral loss can fracture under the controlled force of an adjustment. Other situations that call for caution or avoidance include:
- Spinal cord compression or conditions affecting the structural integrity of the spine
- Blood-thinning medication use, which increases the risk of bleeding from vascular injury
- Active inflammatory arthritis in the spine, such as rheumatoid arthritis
- Known vascular abnormalities in the neck
- Recent fractures or spinal surgery in the area being treated
If you have any of these conditions, let your chiropractor know before treatment. A good practitioner will either modify their approach, using gentler techniques that don’t involve high-velocity thrusts, or refer you to another provider.
Safety Compared to Other Back Pain Treatments
Context matters when evaluating risk. The alternatives to chiropractic care for conditions like low back pain carry their own safety profiles, and some are considerably worse. Long-term use of anti-inflammatory drugs like ibuprofen or naproxen is linked to gastrointestinal bleeding, kidney damage, and cardiovascular problems. Opioid painkillers carry well-documented risks of dependence. Spinal surgery, while sometimes necessary, involves infection risk, anesthesia complications, and recovery periods measured in months.
A 2013 study published in Spine compared chiropractic treatment to a common anti-inflammatory drug for low back pain. The chiropractic group improved faster, reported less physical disability, missed less work, and experienced no adverse effects. By the end of the study, 54% of chiropractic patients reported complete relief compared to 22% in the medication group.
Safety in Children
Pediatric chiropractic is more controversial, partly because the evidence base is smaller and partly because parents are understandably cautious. A retrospective study of nearly 700 children who received over 5,200 chiropractic treatments at a teaching clinic found a reaction rate of about 1 in 100 children, or 1 adverse event per 749 treatments. None of the reported reactions were serious, meaning none lasted more than 24 hours or required hospital care. Six of the seven reported reactions involved increased crying.
A broader review of the medical literature on serious adverse events in children receiving any type of manual therapy (including chiropractic, physical therapy, and osteopathy) found them extremely rare. Three deaths were identified across all manual therapy professions in the published literature, and none were associated with chiropractic care specifically. In the majority of reported serious cases, the child had a preexisting condition that wasn’t identified before treatment, which reinforces how critical thorough screening is before treating any patient, especially young ones.
What a Licensed Chiropractor’s Training Looks Like
Chiropractors in the United States earn a Doctor of Chiropractic degree from a program accredited by the Council on Chiropractic Education. These programs typically involve four years of graduate-level coursework covering anatomy, neurology, orthopedics, radiology, and clinical training. After graduation, chiropractors must pass all four parts of the National Board of Chiropractic Examiners examination before they can be licensed in their state.
Licensing requirements also include demonstrating an ongoing capacity to practice with “reasonable judgment, skill, and safety.” This means chiropractors are trained specifically in understanding which patients are good candidates for manipulation and which are not. If you’re concerned about a practitioner’s qualifications, you can verify their license through your state’s professional regulation board.
How to Make Your Visit Safer
You can reduce your already-low risk further by being an active participant in the process. Give your chiropractor a complete medical history, including any medications you take, previous surgeries, and conditions like osteoporosis or blood clotting disorders. If something feels wrong during or after an adjustment, say so. Pain that’s sharp, shooting, or worsening is different from mild post-treatment soreness and should be communicated immediately.
If neck manipulation makes you uneasy, ask about alternatives. Many chiropractors offer low-force techniques, instrument-assisted adjustments, or mobilization methods that don’t involve the quick thrusting motion associated with traditional adjustments. These approaches can still be effective for many conditions while reducing mechanical stress on the spine and surrounding tissues.