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Lower back spasms are involuntary contractions or tensing of the muscles in the lower back, and they may affect movement. Doctors may recommend medications, lifestyle changes, and complementary ...

Vaginismus makes vaginal penetration painful or impossible due to pelvic floor muscles involuntarily contracting. Primary vaginismus is lifelong, while secondary vaginismus develops after previously ...

A review of how calcium levels regulate skeletal muscle contraction will improve our understanding of muscle development and function. Excess calcium is stored outside muscle cells in a separate ...

Clonus causes involuntary, rhythmic muscle contractions when a muscle is stretched. It is often observed in conditions like multiple sclerosis, stroke, and cerebral palsy. Clonus can be diagnosed by ...

Voluntary muscles can be controlled by the person, like muscles in your neck and legs. Involuntary muscles work without you thinking about it, like your heart and stomach muscles. Skeletal muscles ...

Recessions — contractions in economic activity — start in the month after a peak in the business cycle, and end in the month of the trough.

We have the 3-letter answer for Poetic contraction crossword clue, last seen in the Eugene Sheffer Crossword December 30, 2025 puzzle. Let us help you solve the crossword clue that has you stumped so ...