Coccygeal osteomyelitis: infection of the tailbone

Germs may reach bone through the bloodstream, spread from nearby infected skin or soft tissue, or enter after an open wound or procedure. Coccygeal osteomyelitis can present with deep, persistent tailbone pain and tenderness. Fever, warmth, redness, swelling, or drainage may occur, but their absence does not exclude a bone infection.

Ordinary coccydynia is much more often related to pressure or injury than infection. A clinician considers osteomyelitis from the whole pattern, including examination, recent wounds or procedures, nearby sores, immune health, and whether pain is worsening rather than settling. Symptoms alone cannot confirm it.

Medical evaluation may include blood tests and imaging to look for inflammation, fluid collections, or bone changes. When feasible, a sample from blood, fluid, or affected tissue helps identify the germ and guides antibiotic choice. Do not start leftover antibiotics or squeeze a draining area, because partial treatment can obscure the diagnosis and may not control the infection.

Treatment commonly uses prescribed antimicrobial medicine and management of any nearby wound or abscess. Surgery may be needed to drain infected fluid or remove unhealthy tissue when medicine cannot reach or control the affected area. If infection has damaged bone, reconstruction is considered only within a specialist plan after infection control and wound needs have been assessed.

Seek urgent medical help for severe or rapidly increasing tailbone pain with fever, chills, spreading redness, pus, confusion, faintness, or marked weakness. Prompt assessment is also needed when a wound near the coccyx exposes deeper tissue or when symptoms develop after a procedure. New leg weakness, groin numbness, or loss of bladder or bowel control requires emergency evaluation.

Ask which findings suggest bone infection, whether a sample can identify the germ, and how the team will judge response to treatment. Clarify how to care for any wound, which medication effects need immediate attention, and who to contact if pain or drainage worsens. If surgery is discussed, ask whether its goal is drainage, removal of unhealthy tissue, reconstruction, or a combination.