This article explains the most common reasons legs hurt—from harmless muscle cramps, overuse, and minor injuries to nerve pain (like sciatica), joint problems, and circulation issues such as varicose veins, peripheral artery disease, or blood clots. It helps you recognize symptom clues (sharp vs. aching pain, swelling, color changes, numbness), understand risk factors, and try safe self-care like stretching, hydration, heat/ice, and activity changes. You’ll learn when leg pain is an urgent warning—such as sudden swelling, warmth and redness, chest pain or shortness of breath, or pain with a cold, pale foot—and when to book a routine checkup. The guide also outlines what a clinician may check (history, exam, basic tests) and offers practical prevention tips, plus questions to ask your provider so you feel prepared and supported in choosing the right care.