Brief Answer: muscle strain Detailed Answer: Hello, Thanks for your query. The fact that your pain is occurring with movements indicates a muscle strain. Any strained muscle when stretched gives severe pain. I advice you to follow the below mentioned guidelines - * Give adequate rest to the involved muscle group and avoid any movement that causes pain * Ice packing once in every 2 hours over the affected area * Moist heat application to relax the muscles * Local application of muscle relaxant gel * You can take mild pain killers like acetaminophen or ibuprofen to reduce pain and inflammation. I do hope that you have found something helpful and I will be glad to answer any further query. Take care

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