Carpal Tunnel Syndrome

What It Is & Why It Happens

Carpal Tunnel Syndrome (CTS) is a common neurological condition during pregnancy characterized by tingling, numbness, burning, or aching pain in the hand, fingers, and wrist. It affects up to 60% of pregnant individuals to varying degrees, particularly in the third trimester.

The primary driver of prenatal carpal tunnel is fluid retention (edema). During pregnancy, your blood volume increases by 50%, and hormonal changes cause your body to retain extra fluid to support the fetus and placenta.

Gravity and circulation patterns cause this fluid to accumulate in your extremities. In the wrist, the median nerve and several tendons pass through a narrow pathway called the carpal tunnel. When excess fluid builds up in this area, it increases pressure within the tunnel, compressing the median nerve and disrupting sensory and motor signals to the hand.

Typical Timeline

Carpal tunnel symptoms typically emerge in the late second trimester or third trimester (between Week 24 and Week 40), when fluid retention peaks. The symptoms are often worse in the morning, as fluid accumulates in the upper extremities while you lie flat at night. CTS generally resolves within a few weeks postpartum as the excess gestational fluid is excreted.

Safe Comfort Measures

You can safely relieve hand tingling and wrist discomfort with these self-care guidelines:

• Wear Wrist Splints: Wear rigid wrist splints (available over-the-counter) at night to keep your wrists in a neutral, straight position. This prevents you from flexing your wrists during sleep, which narrows the carpal tunnel and worsens nerve compression.
• Elevate Your Hands: Elevate your hands and forearms on pillows whenever you are resting or sleeping to help drain excess fluid back toward your heart.
• Take Frequent Breaks: If your work involves repetitive hand movements (such as typing, writing, or assembly), take a 5-minute break every hour to stretch your fingers and rotate your wrists.
• Gentle Hand Exercises: Shake out your hands gently when you feel numbness or tingling. Gently massage your wrist and palm to promote circulation and fluid movement.
• Apply Cold Compresses: Wrap an ice pack in a thin towel and apply it to the inside of your wrist for 10 to 15 minutes to help reduce localized swelling and numb pain.
• Avoid Salt Overuse: While you should not restrict sodium drastically without medical advice, avoiding highly processed, high-sodium foods can help minimize excessive fluid retention.

When to Call the Doctor (Red Flags)

While carpal tunnel is standard, severe nerve compression can lead to permanent damage if left unaddressed.

Contact your healthcare provider if you experience:

• A complete loss of sensation or persistent numbness in your thumb and fingers that does not go away when you shake or rest your hands.
• Significant weakness in your hand, such as difficulty gripping objects, dropping things frequently, or struggle with fine motor tasks (like buttoning a shirt).
• Carpal tunnel symptoms accompanied by sudden, severe swelling in your hands, face, or ankles, a persistent headache, or visual disturbances (spots or blurry vision). These are key warning signs of preeclampsia.
• Severe pain that wakes you up multiple times a night and is not relieved by wrist splints or elevation.