Symptoms of Muscle Strain
Muscle strains can cause swelling, bruising, redness, muscle spasms, and weakness. Pain in the muscular tissues surrounding a joint may persist even at rest, without movement.

Muscle strains most commonly occur during physical exercise or fitness training, often resulting from excessive physical activity that overloads the muscles. Pain typically intensifies when the injured muscle contracts actively or is passively stretched.
If the patient experiences a sudden, tearing-like pain, marked swelling, extensive subcutaneous ecchymosis (bruising), and palpation reveals a localized depression or an abnormal bulge at one end of the muscle, a complete muscle tear may be present—potentially leading to permanent disability in severe cases. Immediate medical attention is essential. With appropriate treatment, most muscle strains heal completely.
As outlined above, preventive measures—including regular stretching—are crucial for avoiding muscle strains. If a strain has already occurred, further injury must be prevented through adequate rest and muscle relaxation. When feasible, applying ice or compression may help reduce swelling.