Pain is one of the most common reasons people seek medical care. It may occur due to an injury, an underlying medical condition, nerve damage, or changes in how the nervous system processes pain. While many cases improve with appropriate treatment, some people experience persistent pain even when routine investigations do not reveal a clear cause.
Advances in pain research have expanded our understanding of pain pathways and treatment approaches. Interventional pain management is one area of medicine that may help selected patients manage chronic pain through targeted diagnostic and therapeutic procedures.
Understanding Different Types of Pain
Pain can have different causes, and identifying the underlying mechanism is an important part of choosing an appropriate treatment.
1. Temporary or Acute Pain
Acute pain generally develops over a short period and may occur following an injury, muscle strain, or other temporary condition. Treatment depends on the cause and may include rest, appropriate medication, physiotherapy, or other recommended measures.
2. Pain Caused by an Underlying Medical Condition
Sometimes, pain is a symptom of an identifiable medical problem. Infections, inflammation, spinal conditions, and other disorders can cause pain that requires treatment of the underlying condition.
For example, back pain associated with a confirmed infection requires appropriate medical assessment and treatment rather than pain relief alone.
3. Neuropathic Pain
Neuropathic pain occurs when the nervous system is damaged or affected by disease. People may describe it as burning, tingling, shooting, electric-shock-like pain, or unusual sensitivity to touch.
Neuropathic pain may continue even after the original injury or illness has improved. Diagnosis and treatment depend on the affected nerves, symptoms, and clinical findings.
4. Persistent Pain Without a Clear Explanation
Some people continue to experience pain despite normal or inconclusive laboratory tests and imaging studies. Normal test results do not mean that the pain is imaginary. Certain pain conditions may not be clearly visible on routine investigations.
A detailed medical history, physical examination, and assessment of possible causes can help guide further evaluation and treatment.
5. Pain Management in Serious or Advanced Illness
When an illness cannot be cured, pain management may still help improve comfort, daily functioning, and quality of life. Palliative care can include medication, supportive care, and appropriate procedures according to the patient’s needs and preferences.
Why Is Chronic Pain Difficult to Treat?
Chronic pain can affect more than the area where it begins. It may interfere with sleep, mobility, work, family life, and emotional well-being.
Long-standing pain may also be associated with increased sensitivity to normally non-painful stimuli, unpleasant abnormal sensations, anxiety, low mood, and social withdrawal.
Pain is primarily assessed through a person’s description of symptoms, clinical examination, and the overall medical picture. Unlike blood pressure or blood glucose, it cannot be measured using a single routine test.
Early assessment can help identify treatable causes and support an appropriate pain-management plan. Treatment should be individualized because the causes and effects of chronic pain differ from person to person.
What Is Interventional Pain Management?
Interventional pain management uses targeted procedures to help diagnose or relieve pain in selected patients. Depending on the condition, these procedures may involve injections near specific nerves or pain-transmitting structures.
A specialist may consider an intervention when the clinical assessment suggests that a particular nerve or anatomical structure could be contributing to the pain, especially when other appropriate treatments have not provided sufficient relief.
The choice of procedure depends on the diagnosis, medical history, examination findings, expected benefits, and potential risks. No procedure can guarantee permanent pain relief for every patient.
Understanding Pelvic Pain Syndrome: An Illustrative Case
Consider a 60-year-old woman who has experienced perineal pain and urinary discomfort for several years. Her symptoms become worse after constipation and interfere with sleep, rest, and everyday activities.
She has undergone multiple investigations and consultations, including assessments by different specialists, but these have not identified a clear explanation for her symptoms. Some treatments have provided little relief or helped only temporarily.
Cases like this illustrate why persistent pelvic pain may require a detailed and coordinated evaluation. Depending on the symptoms and examination findings, clinicians may consider pelvic floor disorders, nerve-related pain, urinary or gastrointestinal conditions, and other possible causes.
How May Pelvic Pain Be Evaluated?
The assessment may include:
- A detailed history of the pain, including its location, duration, triggers, and associated symptoms.
- A review of previous investigations and treatments.
- A physical examination and further tests when clinically indicated.
- Referral to relevant specialists when the cause remains unclear.
In selected cases, a specialist may consider diagnostic nerve blocks to investigate whether a particular nerve or pain pathway is contributing to the symptoms. Depending on the findings, further treatment options may be discussed.
Procedures such as pudendal nerve blocks, ganglion impar blocks, caudal blocks, or hypogastric plexus blocks are not appropriate for every patient. Their use depends on the suspected source of pain and the specialist’s assessment. Radiofrequency procedures may be considered in selected cases, but their effectiveness and duration of benefit vary.
An Illustrative Example: Understanding Persistent Back Pain
Imagine a 35-year-old office worker who develops back pain that has lasted for one week. The first step is to take a medical history and perform an examination to look for warning signs and identify the likely cause.
Depending on the findings, the clinician may recommend activity modification, appropriate pain relief, physiotherapy, or further investigation.
If the assessment suggests an underlying condition, such as an infection, additional tests may be needed. Confirmed infections require condition-specific treatment.
If the original condition improves but pain continues, the patient may need reassessment. Persistent pain can have several explanations, including ongoing disease, nerve involvement, or changes in pain processing. It should not automatically be assumed to be neuropathic without appropriate evaluation.
This example highlights the importance of identifying the likely cause of pain rather than relying on pain-relieving medication alone.
Why Should Persistent Pain Be Assessed?
Pain that continues, worsens, repeatedly returns, or interferes with normal activities deserves medical attention. A clinician can assess whether further investigation, medication review, rehabilitation, specialist referral, or an interventional procedure may be appropriate.
Prolonged use of some pain-relieving medicines can cause side effects. Depending on the medication, these may include stomach irritation, ulcers, kidney problems, or other complications. Patients should discuss ongoing medication use with their healthcare professional rather than changing prescribed treatment on their own.
Seek urgent medical assessment for back pain accompanied by new difficulty passing urine, loss of bladder or bowel control, numbness around the groin or saddle area, or rapidly worsening weakness.
A Patient-Centred Approach to Pain Management
Effective pain management begins with listening to the patient, assessing possible causes, and developing an individualized treatment plan. Depending on the condition, care may involve medication, physiotherapy, psychological support, treatment of an underlying illness, or selected interventional procedures.
The aim is to reduce pain where possible, improve function, and support a better quality of life. Patients experiencing persistent pain should seek appropriate medical advice to understand their options and make informed decisions about treatment.
About the Author
Dr Varsha Agarwal