I'm sorry to hear that you're experiencing severe knee pain along with swelling (oedema) in your face, shoulders, and body. These symptoms can be concerning and may indicate an underlying condition that requires prompt medical evaluation.

Possible causes for joint pain combined with widespread oedema include:

• Inflammatory conditions such as rheumatoid arthritis or other autoimmune diseases.
• Kidney or heart issues that can cause fluid retention and swelling.
• Allergic reactions or medication side effects.
• Infections or systemic illnesses affecting multiple body systems.

Given the severity and extent of your symptoms, it is important to see a rheumatologist or a general physician promptly. They can perform a thorough clinical examination, order appropriate blood tests and imaging studies, and determine the exact cause of your symptoms.

If you experience additional symptoms like difficulty breathing, chest pain, or sudden worsening of swelling, seek emergency medical care immediately.

Please consult a doctor as soon as possible to get a proper diagnosis and treatment plan tailored to your condition.To narrow down potential causes, we will need some more information.I understand you're in severe pain and experiencing swelling. Could you please share your age and gender so I can better understand your situation?