There are few disorders on the differential diagnosis for carpal tunnel syndrome. Cervical radiculopathy can be mistaken for carpal tunnel syndrome since it can also cause abnormal or painful sensations in the hands and wrist.  In contrast to carpal tunnel syndrome, the symptoms of cervical radiculopathy usually begins in the neck and travels down the affected arm and may be worsened by neck movement.  Electromyography and imaging of the cervical spine can help to differentiate cervical radiculopathy from carpal tunnel syndrome if the diagnosis is unclear.  Carpal tunnel syndrome is sometimes applied as a label to anyone with pain, numbness, swelling, and/or burning in the radial side of the hands and/or wrists. When pain is the primary symptom, carpal tunnel syndrome is unlikely to be the source of the symptoms.  As a whole, the medical community is not currently embracing or accepting trigger point theories due to lack of scientific evidence supporting their effectiveness.
Heel Neuritis : Neuritis is inflammation of a nerve. In the ankle, a branch from the nerve coursing down the leg can be rubbed and irritated at the inside of the heel. The rub and irritation is generally due to shoes or orthotics. The symptoms include pain, numbness, burning, tingling and needle-like sensations.
X-rays are useful in ruling out other heel problems, but will not show any changes related to the nerve. Unfortunately, specific nerve studies (electrodiagnostic studies) are not specific for this condition. Luckily, the initial treatment for plantar fasciitis and nerve entrapment are very similar. Decreasing stress on the heel and reducing inflammation are the most effective conservative therapies. But, aggressive stretching of the plantar fascia (cornerstone treatment for plantar fasciitis) can potentially worsen the nerve entrapment. Steroid injections may be beneficial by decreasing the irritation and inflammation around the nerve. When conservative treatments fail, surgical release of the nerve may be necessary.