tetany

https://doi.org/10.1351/goldbook.12131
Neurological syndrome characterized by muscle twitches, cramps, and spasms; and in severe forms, by spasm of the muscles of the larynx (laryngospasm) and seizures.
Note: Often reflecting irritability of the central and peripheral nervous systems resulting from a low concentration of ionized calcium in the serum.
Source:
PAC, 2015, 87, 841. (IUPAC Glossary of terms used in neurotoxicology (IUPAC Recommendations 2015)) on page 911 [Terms] [Paper]