Intercostal Nerve Block: How It Works, Benefits & Relief in Naples, FL
By Dr. Magdalena Kerschner · · 7 min read
What Is an Intercostal Nerve Block?
An intercostal nerve block is a minimally invasive pain management procedure that involves injecting a local anesthetic — often combined with a corticosteroid — near the intercostal nerves. These nerves run along the underside of each rib, transmitting sensory information from the chest wall, upper abdomen, and surrounding muscles to the brain. When these nerves become irritated or damaged due to injury, surgery, or disease, they can produce persistent, debilitating pain that wraps around the torso. An intercostal nerve block interrupts these pain signals at their source, providing rapid and targeted relief. At Advanced Pain & Spine Institute in Naples, Florida, Dr. Magdalena Kerschner uses this procedure as part of a comprehensive approach to managing thoracic and upper abdominal pain conditions.
How the Procedure Works
During an intercostal nerve block, the patient lies in a comfortable position while the treatment area is cleaned and sterilized. Dr. Kerschner uses fluoroscopic or ultrasound guidance to precisely locate the targeted intercostal nerve beneath the affected rib. A thin needle is carefully advanced to the nerve, and a small amount of contrast dye may be used to confirm accurate placement. Once positioning is verified, a combination of local anesthetic and anti-inflammatory corticosteroid medication is injected around the nerve. The anesthetic provides immediate pain relief by numbing the nerve, while the corticosteroid reduces inflammation over the following days, extending the duration of relief. The entire procedure typically takes only 15 to 30 minutes and is performed on an outpatient basis, allowing patients to return home the same day.
Conditions Treated
Intercostal nerve blocks are effective for a wide range of conditions that cause chest wall and upper abdominal pain. Post-thoracotomy pain syndrome — chronic pain following chest surgery — is one of the most common indications. Patients recovering from rib fractures, whether from trauma or osteoporosis, often experience significant relief from this procedure. Herpes zoster, commonly known as shingles, can cause severe nerve pain along the intercostal distribution that persists long after the rash resolves, a condition called postherpetic neuralgia. Intercostal neuralgia from nerve entrapment or irritation, costochondritis, and pain from chest wall tumors or metastatic disease are also effectively managed with intercostal nerve blocks. Additionally, this procedure serves as a valuable diagnostic tool, helping Dr. Kerschner confirm that the intercostal nerves are indeed the source of a patient's pain before recommending further treatment strategies.
Benefits of Intercostal Nerve Blocks
Intercostal nerve blocks offer several significant advantages over systemic pain management approaches. Because the medication is delivered directly to the affected nerve, patients receive targeted relief without the sedation, gastrointestinal side effects, or dependency risks associated with oral opioid medications. The procedure is minimally invasive, requiring only a needle insertion with no incisions, stitches, or prolonged recovery time. Pain relief is often felt within minutes of the injection, making it an excellent option for patients suffering from acute or severe discomfort. For patients with chronic conditions, repeated nerve blocks can be integrated into a long-term pain management strategy that may also include physical therapy, medication management, and lifestyle modifications. The diagnostic capability of the block is equally valuable — by confirming the pain source, it allows Dr. Kerschner to develop more precise and effective treatment plans, including consideration of advanced techniques such as radiofrequency ablation or cryoneurolysis for longer-lasting relief.
What to Expect During Treatment
Patients can expect a straightforward and comfortable experience when receiving an intercostal nerve block at our Naples clinic. Before the procedure, Dr. Kerschner reviews your medical history, imaging studies, and symptoms to determine the optimal injection site and approach. On the day of the procedure, you will be positioned comfortably, and the skin over the treatment area will be cleaned and numbed with a local anesthetic. Using image guidance, Dr. Kerschner places the needle with precision, and the medication is injected slowly. Most patients report feeling only mild pressure or a brief stinging sensation. The procedure does not require general anesthesia or sedation, though mild sedation can be offered for anxious patients. After the injection, you will be monitored for a short observation period — typically 15 to 30 minutes — to ensure there are no immediate complications before being discharged.
Recovery & Long-Term Results
Recovery from an intercostal nerve block is rapid and uncomplicated for the vast majority of patients. You may experience mild soreness or bruising at the injection site for one to two days, which can be managed with ice and over-the-counter pain relievers. Most patients resume their normal daily activities within 24 hours. The local anesthetic component provides immediate relief that may last several hours, while the corticosteroid typically reaches full effect within three to seven days. The duration of pain relief varies depending on the underlying condition but generally ranges from several weeks to several months. For patients with chronic pain conditions, a series of nerve blocks may be recommended at regular intervals to maintain consistent relief. When nerve blocks provide significant but temporary improvement, Dr. Kerschner may recommend more advanced interventions such as pulsed radiofrequency treatment or cryoablation of the intercostal nerve for more sustained pain reduction.
Why Choose APSI in Naples, FL
Advanced Pain & Spine Institute, led by Dr. Magdalena Kerschner, is dedicated to providing the highest standard of interventional pain management in Southwest Florida. Our Naples clinic is equipped with state-of-the-art fluoroscopic and ultrasound imaging technology, ensuring every intercostal nerve block is performed with maximum precision and safety. Dr. Kerschner brings extensive training and experience in interventional pain medicine, with a patient-centered approach that prioritizes thorough evaluation, individualized treatment planning, and compassionate care. Whether you are dealing with post-surgical pain, rib fractures, shingles-related neuralgia, or unexplained chest wall discomfort, our team is committed to helping you achieve meaningful, lasting relief so you can return to the activities and quality of life you deserve.
Frequently Asked Questions
How long does pain relief last after an intercostal nerve block?
Pain relief typically lasts from several weeks to several months, depending on the underlying condition. The local anesthetic provides immediate but temporary relief, while the corticosteroid offers longer-lasting anti-inflammatory benefits. Repeat injections or advanced procedures may be recommended for sustained relief.
Is an intercostal nerve block painful?
Most patients experience only mild pressure or a brief stinging sensation during the injection. The treatment area is numbed with a local anesthetic beforehand, and the procedure is generally well-tolerated without the need for sedation.
What are the risks of an intercostal nerve block?
Intercostal nerve blocks are considered very safe when performed by an experienced physician using image guidance. Rare risks include mild bruising, temporary numbness, or very rarely, pneumothorax. Dr. Kerschner uses advanced imaging to minimize these risks.
Can intercostal nerve blocks help with shingles pain?
Yes, intercostal nerve blocks are highly effective for managing postherpetic neuralgia — the persistent nerve pain that can follow a shingles outbreak. The injection targets the affected intercostal nerves directly, providing significant relief from this often debilitating condition.
How many intercostal nerve block treatments will I need?
The number of treatments depends on your specific condition and response. Some patients experience lasting relief from a single injection, while others benefit from a series of blocks spaced several weeks apart. Dr. Kerschner will create a personalized treatment plan based on your results.
Advanced Pain & Spine Institute · 239-307-7087