stomach cramps; stomach spasm; gastrospasm
Medical and everyday term for painful, involuntary contractions of the stomach muscles.
I suddenly got stomach cramps and couldn't move for a while.
I woke up in the middle of the night with stomach spasm pain.
Standard kanji spelling for stomach cramps/spasms.
Mixed kana spelling; 痙攣 is a relatively difficult kanji, so this form is sometimes used for readability.
Compound of 胃 (stomach) and 痙攣 (spasm, convulsion). The reading いけいれん follows standard on'yomi for both kanji.