Management of Neck Muscular Pain

Introduction

• Neck muscular pain is a common condition that requires effective management to improve patient outcomes, with various treatment options available, including pharmacological and non-pharmacological approaches 1, 2

Treatment Options

• Topical NSAIDs are the first-line treatment for neck muscular pain due to their superior benefit-harm ratio compared to oral NSAIDs, providing localized pain relief with minimal systemic absorption, as recommended by the American College of Cardiology 1
• Acetaminophen is a safe option with fewer cardiovascular and gastrointestinal risks, with a recommended dosing of 650-1000 mg every 4-6 hours, although it may be less effective than NSAIDs for inflammatory pain, as suggested by the American Geriatrics Society 2
• Naproxen is the preferred oral NSAID, with a dosing of 250-500 mg twice daily, and has a lower cardiovascular risk profile compared to other NSAIDs, according to the American College of Cardiology 3, 4

Patient Considerations

• Patients over 60 years old, with a history of cardiovascular disease, renal impairment, peptic ulcer disease, hypertension, or heart failure, or those taking anticoagulants, should be monitored closely when taking NSAIDs, with regular checks of baseline blood pressure, kidney function, and liver function tests, as recommended by the National Comprehensive Cancer Network 3, 5
• Patients with chronic kidney disease (CKD) require careful consideration of pain management options due to increased risk of kidney injury and cardiovascular events, with the Kidney Disease: Improving Global Outcomes (KDIGO) guidelines recommending avoidance of NSAIDs and COX-2 inhibitors whenever possible 6
• Patients taking NSAIDs should be monitored for signs of gastrointestinal bleeding and have regular follow-up every 3 months to ensure lack of toxicity, according to the National Comprehensive Cancer Network 5

Medication Guidance

• The American College of Cardiology recommends using the lowest effective dose of NSAIDs for the shortest duration, and considering the addition of a proton pump inhibitor if NSAIDs are necessary, to minimize cardiovascular risks 3, 4
• The American College of Cardiology also suggests considering COX-2 selective inhibitors, such as celecoxib, but notes that they still carry cardiovascular risks 3
• Acetaminophen is recommended as the preferred first-line pharmacologic treatment for arthritis patients with impaired renal function, with dosing limits of ≤4g/day for the general population, ≤3g/day for patients with renal impairment, and ≤2g/day for patients with liver dysfunction 7, 5, 8
• Topical NSAIDs, lidocaine, and capsaicin are good options for localized pain relief with minimal systemic absorption 1, 9
• Non-pharmacological approaches (exercise therapy, weight management, assistive devices) can reduce medication requirements and are recommended for patients with CKD 7, 10

Cardiovascular Risks

• NSAIDs increase the risk of cerebrovascular accidents primarily through COX-2 inhibition, leading to an imbalance between prothrombotic thromboxane A2 and antithrombotic prostacyclin, resulting in a higher risk of thrombotic events including strokes 3
• Risk factors for NSAID-induced cardiovascular events include age >60 years, pre-existing cardiovascular disease, hypertension, and heart failure 11, 12
• The relative risks of NSAIDs for blood pressure effects are:

Renal Considerations

• Regular assessment of kidney function, monitoring of blood pressure, checking electrolytes, and assessing for fluid retention and edema are crucial in managing patients with renal concerns 13
• Baseline BUN and creatinine should be checked before starting therapy, with monitoring within 1-2 weeks of initiation and continuing periodic monitoring (every 3 months) 5
• The Kidney Disease: Improving Global Outcomes (KDIGO) guidelines recommend avoidance of NSAIDs and COX-2 inhibitors whenever possible in patients with CKD 6

Monitoring and Follow-up

• Regular review of medication list for potential interactions and unnecessary medications is recommended, considering deprescribing herbal supplements and vitamins that add complexity without evidence of benefit, as recommended by the Mayo Clinic 14
• Patients taking NSAIDs should be monitored for signs of gastrointestinal bleeding and have regular follow-up every 3 months to ensure lack of toxicity, according to the National Comprehensive Cancer Network 5

Guideline Recommendations

• The American Heart Association recommends using the lowest effective dose for the shortest duration possible to minimize cardiovascular risk, and the American College of Cardiology suggests starting with acetaminophen, small doses of narcotics, or non-acetylated salicylates for pain management 3, 15
• The American College of Rheumatology, American Heart Association, American College of Cardiology, and American Academy of Family Physicians recommend considering safer alternatives for pain management, including acetaminophen, topical analgesics, non-pharmacological approaches, and opioid analgesics for short-term use under close supervision, for patients with impaired renal function, one kidney, elderly patients, and those with pre-existing cardiovascular disease, hypertension, heart failure, or chronic kidney disease 16, 17, 5