What is tetany characterized by?

Tetany is characterized by intermittent spasms, which are involuntary muscle contractions that can occur suddenly and may be painful. This condition is often related to electrolyte imbalances, particularly low levels of calcium in the blood (hypocalcemia), and can lead to symptoms such as tetanic contractions of the muscles. People experiencing tetany might have muscle cramps or spasms, which can affect various muscle groups in the body, sometimes leading to a state of muscle stiffness or rigidity during episodes.

The other options do not accurately describe tetany. Rapid breathing may occur in some cases related to anxiety or respiratory conditions but is not a defining characteristic of tetany. Loss of appetite and persistent headaches are symptoms that could be associated with various other health issues but are not specifically related to the muscle contractions and spasms seen in tetany. Therefore, intermittent spasms is the most appropriate description of this condition.