You should avoid putting excessive strain on your knee and consider using pain relief measures like prescribed medications and rest. Since your pain has lasted 15 to 20 days with limited movement and severe discomfort on stairs, it is important to see an orthopedic doctor for a thorough evaluation and appropriate treatment.

🩺 What You Can Do Now

• Apply ice packs to reduce swelling and pain for 15-20 minutes several times a day.
• Avoid activities that worsen the pain, such as climbing stairs or prolonged standing.
• Use over-the-counter pain relievers like NSAIDs (non-steroidal anti-inflammatory drugs) only if recommended by a doctor.

⚕️ When to See a Doctor

• If pain and limited movement persist beyond a few days despite self-care.
• If you notice swelling, redness, warmth, or instability in the knee.
• If pain is severe enough to limit daily activities.

🩺 Follow-Up

An orthopedic specialist can assess for possible causes such as ligament injury, meniscus tear, or early arthritis and may recommend imaging or physical therapy. Early diagnosis and treatment can prevent worsening and improve recovery.

Please consult an orthopedic doctor promptly to get a proper diagnosis and tailored treatment plan.To narrow down potential causes, we will need some more information.I understand you've been experiencing left knee pain for the past 15-20 days, with limited movement and severe pain when climbing stairs. To assist you better, could you please provide your age and gender?