hypocapnia

https://doi.org/10.1351/goldbook.11822
Abnormally decreased carbon dioxide concentration in the blood.
Note: An increased respiratory rate during normal metabolic activity may cause hypocapnia that may be associated with spasms.
Source:
PAC, 2015, 87, 841. (IUPAC Glossary of terms used in neurotoxicology (IUPAC Recommendations 2015)) on page 874 [Terms] [Paper]