Dr. Shruti Raj (PT) on Instagram: "Severe cervical muscle spasm (sudden, painful tightening of the neck muscles) can happen due to a variety of reasons, ranging from mechanical strain to underlying medical conditions. Here are the common causes: 1. Musculoskeletal Causes :Poor posture – prolonged forward head posture (e.g., mobile phone, laptop use). :Sudden awkward movement – turning the head too quickly or sleeping in an odd position. :Muscle strain/overuse – heavy lifting, repetitive neck mov