Lower back pain in the morning that goes away is often linked to temporary stiffness from resting in one position overnight, mattress support, or non-specific mechanical back pain. In many cases, it improves once the body warms up and the spine starts moving.
This type of pain is usually less concerning when it is mild, short-lived, and not getting worse. Staying active, avoiding prolonged bed rest, and doing gentle movement may help reduce stiffness. A medium-firm mattress may also help some people with back pain during sleep or when getting up.
However, morning back pain can sometimes point to inflammation, especially if stiffness lasts more than 30 minutes, improves with exercise but not rest, causes pain at night, or starts before age 45. These patterns may need medical evaluation to rule out inflammatory back conditions.
A doctor or orthopedic specialist should assess pain that lasts more than a few weeks, worsens, spreads down the leg, or comes with weakness, numbness, fever, unexplained weight loss, or bladder or bowel changes.