Cadaveric spasm
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Cadaveric spasm, also known as instantaneous rigor, cataleptic rigidity, or instantaneous rigidity, is a rare form of muscular stiffening which occurs at the moment of death, persists into the period of rigor mortis[1] and can be mistaken for rigor mortis. The cause is unknown, but usually associated with violent deaths happening with intense emotion. Cadaveric spasm may affect all muscles in the body, but typically only groups, such as the forearms, or hands. Cadaveric spasm is seen in cases of drowning victims when grass, weeds, roots or other materials are clutched, and provides proof of life at the time of entry into the water.
