A Spinal Infection is an infection involving the bones (vertebrae), intervertebral discs or surrounding tissues of the spine. These infections may be caused by bacteria, fungi or, less commonly, other microorganisms.
Depending on the location of infection, spinal infections may be referred to as:
Spondylitis (infection of the vertebrae)
Discitis (infection of the intervertebral disc)
Spondylodiscitis (infection involving both the vertebrae and disc)
Epidural Abscess (collection of pus around the spinal cord)
Although relatively uncommon, spinal infections are potentially serious conditions that require prompt diagnosis and treatment to prevent spinal instability, deformity and neurological complications.
Common Symptoms
Symptoms may develop gradually or, occasionally, quite rapidly.
Pain Symptoms
Persistent back pain
Neck pain
Pain that progressively worsens
Pain at rest
Night pain
Severe localized spinal tenderness
Constitutional Symptoms
Fever
Chills
Night sweats
Fatigue
Loss of appetite
Unexplained weight loss
Spine-Related Symptoms
Difficulty walking
Muscle spasm
Reduced spinal mobility
Difficulty standing upright
Neurological Symptoms
If nerve roots or the spinal cord become compressed:
Tingling or numbness
Weakness in the arms or legs
Difficulty walking
Gait imbalance
Bladder or bowel dysfunction
Causes & Risk Factors
Spinal infections occur when microorganisms reach the spine through the bloodstream, direct inoculation or spread from nearby tissues.
Common Causes
Bacterial Infections
The most common cause of spinal infections.
Common organisms include:
Staphylococcus aureus
Streptococcal species
Gram-negative bacteria
Fungal Infections
Rare but may occur in immunocompromised individuals.
Post-Surgical Infections
May occur following spinal surgery or invasive spinal procedures.
Risk Factors
Diabetes mellitus
Chronic kidney disease
Cancer
Immunosuppression
Long-term steroid use
Intravenous drug use
Malnutrition
Advanced age
Recent surgery
Existing infections elsewhere in the body
When Should You Seek Medical Advice?
Medical evaluation is recommended if:
Persistent back pain is associated with fever
Pain worsens despite treatment
Night pain develops
Weight loss occurs
Difficulty walking develops
Recent spinal surgery has been performed
You have significant medical comorbidities
Seek Immediate Medical Attention If:
Weakness develops
Walking becomes difficult
Severe neurological symptoms occur
Bladder or bowel symptoms develop
Severe infection symptoms are present
These may indicate spinal cord or nerve compression requiring urgent intervention.
How Is It Diagnosed?
Clinical Examination
Your doctor will assess:
Spinal tenderness
Neurological function
Signs of infection
General medical condition
X-Ray
Early infections may not be visible.
Advanced disease may show:
Disc space narrowing
Vertebral destruction
Spinal instability
MRI
MRI is the most important imaging investigation.
It helps identify:
Disc infection
Vertebral infection
Epidural abscess
Neural compression
Extent of disease
MRI is highly sensitive for early diagnosis.
CT Scan
Useful for:
Detailed bone evaluation
Image-guided biopsy planning
Blood Tests
Important investigations include:
ESR
CRP
Complete blood count
Blood cultures
These tests help identify inflammation and infection.
Biopsy & Culture
A biopsy may be required to:
Confirm infection
Identify the causative organism
Guide antibiotic treatment
Treatment Options
Non-Surgical Treatment
Many patients can be treated successfully without surgery.
Treatment may include:
Intravenous antibiotics
Oral antibiotics
Antifungal medications (when indicated)
Pain management
Nutritional support
Physiotherapy
Activity modification
Treatment duration is often prolonged and may continue for several weeks or months depending on the infection.
Surgical Treatment
Surgery may be required when:
Significant neurological compression develops
Epidural abscess is present
Spinal instability occurs
Progressive deformity develops
Conservative treatment fails
Tissue diagnosis is required
Common surgical procedures include:
Surgical Debridement
Decompression Surgery
Abscess Drainage
Spinal Stabilization Surgery
Biopsy Procedures
The choice of surgery depends on the severity and location of infection.
Frequently Asked Questions
1. What is a Spinal Infection?
A spinal infection involves infection of the vertebrae, discs or surrounding spinal tissues.
2. Is a Spinal Infection serious?
Yes. Untreated infections may cause spinal instability, deformity and neurological complications.
3. What causes spinal infections?
Most commonly bacteria, although fungal and other infections may also occur.
4. Can spinal infections occur after surgery?
Yes. Post-operative spinal infections are uncommon but recognized complications.
5. Is fever always present?
No. Some patients may have spinal infections without significant fever.
6. Why is MRI important?
MRI helps detect infection early and assess its extent.
7. Will I need antibiotics?
Most spinal infections require prolonged antibiotic therapy.
8. Can spinal infections cause paralysis?
Severe infections causing spinal cord compression may result in neurological deficits if untreated.
9. Is surgery always necessary?
No. Many patients respond well to appropriate medical treatment.
10. When should I suspect a spinal infection?
Persistent back pain associated with fever, weight loss, elevated inflammatory markers or recent surgery should raise suspicion.
Related Conditions
Spinal Tuberculosis (TB Spine)
Spinal Tumor
Spinal Fracture
Myelopathy
Osteoporosis
Kyphosis
When Should You Consult a Spine Specialist?
If you have persistent back pain associated with fever, unexplained weight loss, elevated infection markers, recent spinal surgery or neurological symptoms, early specialist evaluation is strongly recommended.
Prompt diagnosis and treatment can prevent spinal deformity, instability and permanent neurological complications.
Need Expert Advice?
Book a consultation with Dr. Siddharth Katkade or upload your MRI, CT scan or reports for review through our Patient Resource Centre.
Need Clinical Evaluation?
Consult with Dr. Siddharth Katkade (MBBS, MS, DNB, FASSI Germany/UK) for accurate diagnosis and personalized spine treatment.
