Lower back right-side muscle pain

Pain on the right may follow lifting, sport, prolonged posture, or a sudden twist, especially when it is tender and changes with movement. The facet joints, sacroiliac joint, or connective tissues can create a similar one-sided ache. A herniated disc may irritate a nerve and send pain into the buttock or leg, sometimes with tingling or weakness. Lumbar spondylosis and non-specific low back pain are other possible explanations.

Pain deeper in the side or back with fever, nausea, urinary changes, or feeling unwell may not be a simple muscle problem. Note what triggers the pain and whether it spreads.

Avoid the lift, twist, or exercise that started the pain, but keep up gentle walking if comfortable. Try heat or a wrapped cold pack, adjust sitting and sleeping positions, and return to normal activity in small steps. A clinician or pharmacist can advise on pain medicine based on your medical history. Arrange a review if the pattern is unclear or not settling.

Seek urgent care for severe or rapidly worsening pain, fever, vomiting, blood in the urine, inability to pass urine, new leg weakness, numbness around the groin, or bladder or bowel control changes. Prompt assessment is also appropriate after a significant injury or when pain is accompanied by unexplained weight loss or feeling very unwell.

Ask: Does movement or tenderness suggest a muscle, joint, or nerve source? Could urinary or abdominal symptoms point to another cause? Do I need an examination or imaging? Which activities and pain-relief options are safe while I recover?