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.
sepal - one of the green parts that form the calyx of a flower. 1  floral leaf - a modified leaf that is part of a flower. 2  calyx - (botany) the whorl of sepals of a flower collectively forming the outer floral envelope or layer of the perianth enclosing and supporting the developing bud; usually green.