Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
convulse [kənˈvʌls] vt
to be convulsed with laughter/pain содрога́ться (impf) от сме́ха/бо́ли
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.
Русский: