"leg cramps during sleep"

Calf Cramps That Make You Scream in Your Sleep: Why Do They Only Strike at Night?

Have you ever woken up late at night to your calf muscle twisting with sudden, excruciating pain that makes you scream? The agony feels as if an unsettling tentacle were wrapping around your leg, momentarily draining all the strength from your body. Why does this uninvited guest visit only in the quiet of the night, right in bed?