Knee pain often results from injuries, gout, or inflammation. When the discomfort intensifies at night, it can interfere with sleep quality and even lead to insomnia. Understanding the causes of nighttime knee pain and how to manage it can help alleviate discomfort and improve rest.

Causes of Knee Pain

Various factors, including injuries and medical conditions, can contribute to knee pain. Some cases may require specialized treatment if the pain persists every night, while pain from an injury typically subsides once healing occurs. Below are some common causes of knee pain that may disrupt your sleep.

Runner's knee

Runner’s knee, also known as patellofemoral pain syndrome, is a condition that causes discomfort at the front of the knee or around the kneecap. It is commonly referred to as "runner’s knee" because it frequently affects runners, though it can also occur in individuals who do not engage in running activities.

Typical symptoms of this condition include pain and a clicking sensation in the kneecap. The discomfort often arises when the kneecap moves improperly and rubs against the lower thigh bone. This syndrome is primarily caused by excessive physical activity or repetitive stress injuries.

Pain associated with runner’s knee usually subsides after a few weeks of rest. Applying cold compresses and taking over-the-counter anti-inflammatory medications can also help ease discomfort.

Osteoarthritis

Osteoarthritis occurs when the cartilage that cushions the joints wears down due to aging or excessive activity. This condition can affect various joints, including the knees, hands, hips, and spine.

Currently, there is no definitive cure for osteoarthritis. Treatment typically involves pain relievers, physical therapy, or, in severe cases, surgical intervention.

Rheumatoid Arthritis

Rheumatoid arthritis (RA), or rheumatism, is a chronic autoimmune disorder that affects multiple joints, including the knees. In this condition, the immune system mistakenly attacks healthy tissues and cells, leading to inflammation and pain.

Although there is no specific cure for rheumatoid arthritis, symptoms can be managed with pain relievers, cortisone injections, and occupational or physical therapy.

People with rheumatoid arthritis often experience discomfort at night, which can affect sleep. Adjusting sleeping positions with pillows for shoulder, hip, and knee support may help relieve joint pain. Additionally, wearing compression stockings or gloves can promote better sleep quality.

Gout

Gout is characterized by pain, swelling, and warmth in the joints due to the accumulation of uric acid crystals. Individuals with gout often experience worsening pain at night. To alleviate discomfort, it is recommended to stay hydrated, take pain relievers before bedtime, apply cold compresses, and support the affected joint.

Bursitis

Bursitis refers to inflammation of the bursae—fluid-filled sacs that cushion the joints. When the bursae in the knee become inflamed, they can swell and put pressure on the surrounding structures, leading to pain.

Symptoms of bursitis include swelling around the kneecap, pain when bending the knee, and worsening discomfort at night. Treatment for bursitis typically includes rest, ice application, and the use of nonsteroidal anti-inflammatory drugs (NSAIDs) to reduce pain and inflammation.

Why Do Knee Pain Worsen At Night?

Several factors may contribute to increased knee pain at night, including:

• Cortisol Level Changes: The hormone cortisol, which helps reduce inflammation, decreases during sleep. While this decline aids in relaxation, it can also lead to heightened pain sensitivity.
• Sleeping Position: Certain sleep positions may place undue pressure on the knees or restrict blood circulation, intensifying pain during the night.
• Sleep Deprivation: A lack of sufficient rest can make the nervous system more sensitive to pain, making discomfort feel more severe.

Knee pain tends to become more noticeable at night. Adjusting sleeping positions, staying hydrated, and using pain relievers can help reduce discomfort. If knee pain persists or worsens, consulting a doctor is advisable. You can also use the consultation feature in the Ai Care app, available for download on the App Store or Play Store.

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