Knee pain is a common issue that can arise from a variety of causes, and not all knee pain requires medical attention. However, there are certain signs and symptoms that indicate the need for professional evaluation and possibly immediate care. Here are some situations when you should worry about knee pain and seek medical advice:

1. Severe Pain

Sudden and severe knee pain: If you experience a sudden, intense pain in your knee, especially after a fall, accident, or injury, it could indicate a serious issue like a fracture, ligament tear, or dislocation.
Pain that doesn’t improve with rest: If your knee pain persists or worsens despite resting and avoiding activities that exacerbate it, you should consult a healthcare provider.

2. Swelling

Significant swelling: Swelling that appears suddenly or is severe can be a sign of a serious injury or condition, such as a ligament tear or infection.
Persistent swelling: Swelling that doesn’t go down after a few days of rest and home treatment (like ice and elevation) should be evaluated.

3. Limited Range of Motion

Difficulty bending or straightening the knee: If you can’t fully extend or flex your knee, or if it feels like it’s locked in place, you should seek medical attention.
Stiffness that restricts movement: Persistent stiffness that limits your ability to move your knee normally could be a sign of arthritis or other joint issues.

4. Instability or Weakness

Knee gives way: If your knee feels unstable or like it might give out when you put weight on it, this could indicate ligament damage.
Weakness in the knee: Persistent weakness or difficulty bearing weight on the knee should be evaluated, as it could be due to a structural problem.

5. Redness and Warmth

Redness and warmth around the knee: These symptoms can indicate an infection or inflammatory condition, such as septic arthritis or bursitis.
Fever along with knee pain: If you have a fever and knee pain, it could be a sign of an infection that requires prompt medical attention.

6. Deformity

Visible deformity: If your knee looks misshapen or out of alignment, this could indicate a dislocation or fracture that needs immediate care.
Changes in shape or size: Any noticeable changes in the shape or size of your knee should be assessed by a healthcare provider.

7. Chronic Pain

Pain lasting more than a few weeks: Chronic knee pain that doesn’t improve with rest, home treatments, or over-the-counter medications should be evaluated.
Pain affecting daily activities: If your knee pain interferes with your ability to perform everyday tasks, it’s important to seek medical advice.

8. Previous Knee Surgery or Conditions

History of knee surgery: If you’ve had knee surgery in the past and experience new or worsening pain, you should consult your surgeon or healthcare provider.
Pre-existing knee conditions: If you have a history of knee issues like arthritis or previous injuries, new or worsening pain should be evaluated.

While not all knee pain is a cause for concern, recognizing the signs that warrant medical attention can help you address potential issues early and prevent further complications. If you’re ever in doubt about the severity of your knee pain, it’s always best to consult a healthcare professional for an accurate diagnosis and appropriate treatment plan. Taking proactive steps can ensure your knee health and overall well-being.