A muscle spasm — also known as a charley horse, muscle cramp or twitch — is a sudden, involuntary movement in one or more muscles. Common causes include stress, exercise, or dehydration, but nerve ...

Chest heaviness during winter is often blamed on cold weather, but doctors warn it can signal respiratory, cardiac or anxiety ...

Esophageal spasms cause painful chest contractions and affect swallowing and digestion. Medications and peppermint oil can ...