Carpal tunnel syndrome is a condition that often causes numbness and tingling
in the thumb, index finger, middle finger and part of the ring finger.
These symptoms are caused by compression of the median nerve at the wrist
level. Along with sensation changes, the muscles around the thumb can
weaken and patients can sometimes lose the ability to grasp small objects
or sense the difference between hot and cold temperatures.
Causes
Sometimes carpal tunnel syndrome occurs without a clear reason or injury.
Common causes may include:
Overuse
Arthritis
A fracture near the wrist
Fluid retention due to pregnancy
Diabetes
Thyroid disease, particularly an under active thyroid
How long carpal tunnel syndrome takes to recover is dependent on the cause
and the length of time the symptoms have been present. Sometimes the symptoms
come and go and sometimes they are constant.
Symptoms may include:
Waking up with numb hands which may lead you to shake the wrist and hand
for relief
Tingling during the day
Pain
Swelling sensation in the fingers
Dropping objects
Diagnosis
Carpal tunnel syndrome is usually diagnosed based on the description of
symptoms and by a thorough physical examination.
Blood tests may be ordered to look for evidence of diabetes or thyroid
disease, since these are common triggers of carpal tunnel syndrome. X-rays
and nerve studies might help in the diagnosis of carpal tunnel syndrome as well.
Treatment
Wearing a splint on the affected wrist is often the first place to start.
Taking a nonsteroidal anti-inflammatory drug such as aspirin, ibuprofen,
or naproxen can help reduce inflammation.
Injections of cortisone may help reduce inflammation.
Referral to a Certified Hand Therapist for ergonomic education, therapeutic
exercises and therapeutic modalities.
If conservative management does not help, surgery can relieve pressure
on the median nerve. This is done by releasing a ligament at the base
of the wrist, which relieves pressure from the nerve in the carpal tunnel.
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