Now, let me explain in greater detail how modern medicine understands this wrist numbness and pain. What we commonly call 'carpal tunnel syndrome' is a nerve compression syndrome that occurs when the narrow canal in front of the wrist, known as the 'carpal tunnel', undergoes pressure from various causes, compressing the 'median nerve' that runs inside. Inside this carpal tunnel, nine tendons that move the fingers pass alongside the crucial median nerve.
Just as traffic becomes gridlocked when too many cars crowd into a narrow tunnel, when the space inside the carpal tunnel narrows or pressure rises from inflammation and edema, the median nerve that should glide smoothly becomes tightly pinched. This median nerve governs sensation in the thumb, index finger, middle finger, and half of the ring finger, while also controlling motor function in certain thumb muscles. When this nerve is compressed, these areas tingle, burn, or become numb, and in severe cases, weakness develops in the thumb. You might drop objects you are holding or struggle with small tasks like buttoning a shirt.
There are several reasons why symptoms worsen especially at night. Fluid that accumulates in the arms and wrists from daytime activity can shift toward the arms and wrists due to gravity when lying down, which may worsen edema. Furthermore, maintaining an awkward, flexed, or twisted wrist posture without realizing it during sleep often elevates the pressure inside the carpal tunnel. What the Donguibogam describes as 'stagnation and binding of qi and blood from yin deficiency' aligns in modern medicine with inflammation and edema resulting from diminished circulation and nerve compression.
This condition appears more frequently in certain age groups and occupations. It is common among homemakers, computer users, hairstylists, and cooks who repeatedly use their wrists or hold strained postures. The risk also rises with systemic conditions that alter fluid balance or induce neuropathy, such as pregnancy, thyroid gland dysfunction, and diabetes. Rather than brushing it off as minor wrist soreness, please listen closely to the signals your body is sending. In the early stages, simple treatment and lifestyle adjustments can bring significant improvement.
