Sinus tachycardia. This happens when your heartâs natural pacemaker sends out electrical signals faster than normal. Your ticker beats fast, but it beats the way it should. What Causes It? Any number of things. Strenuous exercise, a fever, fear, stress, anxiety, certain medications, and street drugs can lead to sinus tachycardia. It can also be triggered by anemia, an overactive thyroid, or damage from a heart attack or heart failure.
carpal tunnel syndrome. a common disorder of the wrist and hand characterized by pain, tingling, and muscular weakness, caused by pressure on the median nerve in the wrist area and often associated with trauma, rheumatoid arthritis, or edema of pregnancy.
Carpal Tunnel Syndrome Definition and Symptoms. Carpal tunnel syndrome is a condition that involves a pinched nerve in the wrist. This syndrome affects the hand and arm. The most common cause of this condition is a compressed median nerve. Symptoms include tingling or numbness in the hand, weakness in the hand or arm, and pain in the hand and arm.