Get urgent medical care if
Numbness comes on suddenly, affects one whole side of the body, involves the face, or arrives with weakness, slurred speech, confusion or visual change — these can indicate a stroke. Also urgent: numbness around the groin, buttocks or inner thighs, particularly with any change in bladder or bowel control. Call 000 or go to an emergency department. Do not book an appointment and wait.
Where the interference can happen
A nerve runs a long way from the spinal cord to the skin, and it can be irritated at any point along it.
- At the nerve root. Where the nerve exits the spine — commonly from a disc or from narrowing of the exit canal. Symptoms follow a specific map: particular fingers, or a defined band down the leg. In the leg this often presents as sciatica.
- Along the limb. Carpal tunnel at the wrist, cubital tunnel at the elbow, or compression through the shoulder region. The distribution differs from a nerve root pattern, and the two are distinguishable on examination.
- Neither. Diabetes, thyroid disease, B12 deficiency, certain medications and other systemic causes all produce numbness and tingling, and they typically do it in a glove-and-stocking distribution affecting both sides. That pattern is a strong signal to see a GP rather than a chiropractor.
Why the distribution matters so much
It is the single most informative piece of information you can bring. Numbness in the thumb, index and middle fingers that spares the little finger points strongly towards the wrist. Numbness in the little finger and the ring finger points towards the elbow or the lower cervical spine. A band down the outside of the calf into the top of the foot suggests a particular lumbar level.
Before you come in, it is worth paying attention to exactly where it is and exactly when: at night, at the desk, after walking a certain distance. Those details narrow the field quickly.
How we assess it
The examination is properly neurological: reflexes, power testing, sensation mapped across dermatomes, and specific nerve tension and compression tests. Alongside that, a segmental assessment of the spine and the relevant limb joints.
The purpose is to establish whether this is mechanical nerve irritation we can address, and if so, where. Where imaging would change the plan, we have it on-site.
What care might involve
Where the cause is mechanical: adjustment of segments that have lost movement, cold laser therapy for irritability, spinal decompression for particular disc-related presentations, and rehabilitation to change the loading pattern behind it.
And where it is not mechanical
If the examination points to a metabolic, systemic or medication-related cause, chiropractic care is not the answer and we will say so. You will get a clear explanation and a recommendation to see your GP, which is a considerably better outcome than a course of treatment that was never going to work.