ĭepending on the severity of the patient's symptoms, they can categorize into three stages. Patients' symptoms tend to worsen at night or during the hand's repetitive movements, especially those requiring prolonged wrist flexion. However, the recurrent thenar motor branch does pass through the carpal tunnel and gives innervation to the opponens pollicis, abductor pollicis brevis, and superficial head of the flexor pollicis brevis. The thenar area has normal sensation as the palmar cutaneous sensory branch innervates it, which does not pass through the carpal tunnel. The clinical presentation typically reveals numbness, weakness, and paresthesias within the thumb, index, middle, and radial side of the ring finger. Furthermore, patients whose occupations rely on the hands' repetitive movements and those with forceful hand movements are also prone to developing CTS. Hypothyroidism, diabetes mellitus, rheumatoid arthritis, gout, peripheral edema, acromegaly, tumors, trauma, and pregnancy are risk factors that predispose patients to develop CTS. It is more common in women than in men, and while it occurs in all age groups, incidence generally reaches a peak within the age of 40 to 60 years. It is present in about 3.8% of the general population. Carpal tunnel syndrome (CTS) accounts for approximately 90% of all focal entrapment neuropathy, making it a frequent electrodiagnostic consultation.
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