What could be the reason for pain at a spot in the lower back?

In general, possible causes of localized pain in the posterior spine include muscle fatigue, spinal trauma, lumbar myofascial inflammation, spondylitis, and rheumatoid arthritis. If discomfort occurs, it is recommended to seek medical attention promptly for proper diagnosis and treatment. Specific analyses are as follows:

1. Muscle Fatigue

Prolonged poor posture or overuse of the muscles in the posterior spine can lead to muscle fatigue, resulting in localized pain, muscle stiffness, soreness, and swelling. It is advisable to allow adequate rest for the back muscles and avoid maintaining the same posture for extended periods or engaging in repetitive activities.

2. Posterior Spinal Trauma

When the posterior spine experiences external impact or strain, it may cause muscle strain or sprain, leading to localized pain, muscle stiffness, and discomfort. Treatment may include medications such as analgesic plasters, flurbiprofen gel patches, or Yunnan Baiyao aerosol spray, used according to medical advice.

3. Lumbar Myofascial Inflammation

Lumbar myofascial inflammation may be triggered by exposure to cold. This condition can cause tension and spasms in the back muscles, increasing pressure and tightness in the lower back, resulting in localized posterior spinal pain, muscle tension, and weakness. Medications such as diclofenac sodium sustained-release tablets, doxepin hydrochloride tablets, or celecoxib capsules may be taken under a doctor's guidance.

4. Spondylitis

Spondylitis may be caused by bacterial infection. The inflammatory response associated with spondylitis can lead to symptoms such as kyphosis (hunchback), localized posterior spinal pain, and weight loss. Treatment may involve medications such as methotrexate tablets, sulfasalazine enteric-coated tablets, or dexamethasone acetate tablets, taken as prescribed by a physician.

5. Rheumatoid Arthritis

Rheumatoid arthritis may result from endocrine and immune system abnormalities. This condition may present with morning stiffness, limb swelling, and localized posterior spinal pain. Under medical supervision, medications such as etoricoxib tablets, loxoprofen sodium tablets, or tripterygium wilfordii tablets may be used for treatment.

In daily life, consuming foods rich in calcium and vitamin D—such as cod liver oil, milk, and cheese—can help support spinal health.