Management of Pain: CPD for Pharmacists

Written by Eamonn Brady, MPSI

Overview

60 Second Summary

Pain is one of the most common reasons for presentation to primary care and community pharmacy, encompassing acute conditions such as injury, infection and dental pain, as well as chronic disorders including osteoarthritis, back pain and neuropathic syndromes. Community pharmacists are often the first point of contact and play a central role in assessment, safe self-care advice, appropriate analgesic selection and timely referral.

Effective pain management begins with structured assessment to identify pain type, severity, duration, functional impact and red- flag symptoms that require urgent medical review. Understanding the distinction between nociceptive, inflammatory and neuropathic pain is essential in guiding appropriate treatment and avoiding ineffective or potentially harmful therapy.

Non-pharmacological strategies, including education, activity modification, heat or cold therapy, exercise and sleep optimisation, should be recommended routinely and form the foundation of care. Pharmacological management should follow a stepwise approach, using the lowest effective dose for the shortest necessary duration. Paracetamol remains a first-line option for many patients due to its favourable safety profile, particularly in older adults and those with comorbidities. NSAIDs may be appropriate for inflammatory pain but require careful risk assessment. Combination analgesics have a role in short-term management of moderate acute pain, with clear counselling to minimise the risks of adverse effects and dependence.

Pharmacists must remain vigilant for medicine overuse, interactions and special population considerations, including pregnancy, renal or hepatic impairment and polypharmacy. Through evidence-based practice, patient education and multidisciplinary collaboration, community pharmacists are ideally placed to optimise pain control while minimising medicine-related harm and supporting improved quality of life for patients.

Management of Pain in Community Pharmacy: An Evidence-Based Guide

Pain is one of the most common reasons for which patients seek healthcare advice and is a frequent presentation in community pharmacy. Acute pain may arise from injury, infection, inflammation, surgery or dental problems, while chronic pain affects approximately one in five adults and represents a major cause of disability, reduced quality of life and healthcare utilisation. Community pharmacists are often the first healthcare professionals consulted and therefore play a crucial role in early assessment, safe self-care advice, appropriate analgesic selection, monitoring of treatment response and referral when necessary.

The management of pain has become increasingly complex due to an ageing population, high levels of multimorbidity, polypharmacy and heightened awareness of the risks associated with long-term opioid use. At the same time, there is strong evidence that many patients continue to under-treat pain or use medicines inappropriately. An evidence-based, structured and patient-centred approach in community pharmacy can improve outcomes, reduce medicine- related harm and support the wider primary care system.

Understanding Pain

Association for the Study of Pain as an unpleasant sensory and emotional experience associated with actual or potential tissue damage. It is influenced by biological, psychological and social factors and cannot be explained solely by the presence or absence of tissue injury.

From a clinical perspective, pain can be broadly categorised into:

Nociceptive pain, arising from stimulation of peripheral pain receptors due to tissue damage or inflammation. It is typically described as aching, throbbing or sharp and is well localised. Examples include osteoarthritis, muscle strain and postoperative pain.

Inflammatory pain, driven by the release of prostaglandins, bradykinin and cytokines, leading to sensitisation of nociceptors. This type of pain often responds well to anti-inflammatory medicines.

Neuropathic pain, caused by damage or dysfunction within the nervous system. Patients may describe burning, shooting, electric-shock sensations, tingling or numbness. Common causes include diabetic neuropathy, post- herpetic neuralgia and sciatica. This type of pain responds poorly to conventional analgesics and often requires specialist therapies.

Mixed pain, in which both nociceptive and neuropathic mechanisms are present, as seen in chronic low back pain or cancer- related pain.

Pain may also be classified as acute or chronic. Acute pain usually resolves as tissue heals and has a protective function, whereas chronic pain persists beyond three months and is associated with central sensitisation, altered pain processing and significant psychological impact.

The Role of the Community Pharmacist

Community pharmacists are uniquely positioned to contribute to pain management through:

• Accessible first-line assessment and triage

• Identification of red flags
• Advice on non-pharmacological measures

• Safe recommendation of OTC analgesics

• Detection of inappropriate medicine use or dependence

• Optimisation of therapy in patients with comorbidities

• Referral to GP, dentist or emergency services when indicated

Table 1: Types of Pain and Typical Features

Pharmacists also play a key role in educating patients on realistic expectations, correct dosing, duration of therapy and the importance of combining medicines with lifestyle and supportive measures.

Assessment of Pain in the Pharmacy

A structured assessment helps determine whether self-care is appropriate and guides treatment selection. The following framework can be used in brief consultations:

History of the Pain

• Onset: sudden or gradual, traumatic or spontaneous

• Location and radiation
• Character: sharp, dull, burning, throbbing, stabbing

• Severity: numerical rating scale (0–10)

• Duration and pattern
• Exacerbating and relieving factors

• Impact on sleep, work and daily activities

Table 2: Structured Pain Assessment in Community Pharmacy

Associated Symptoms

• Fever, weight loss, night sweats
• Neurological symptoms
• Swelling, redness or deformity
• Bladder or bowel dysfunction

Medical History and Medicines

• Cardiovascular, renal, gastrointestinal or liver disease

• Pregnancy or breastfeeding
• Concomitant medicines

(anticoagulants, corticosteroids, SSRIs, ACE inhibitors)

• Previous analgesic use and response

Red Flags Requiring Urgent Referral

Immediate referral is required if any of the following are present:

• Sudden severe headache or neurological deficit

• Chest pain suggestive of cardiac origin

• Severe abdominal pain with guarding or vomiting

• Suspected fracture or dislocation

• New onset back pain with bladder or bowel dysfunction

• Unexplained weight loss with persistent pain

• Fever with spinal pain
• History of cancer with new bone pain

Non-Pharmacological Management

Non-drug measures are essential in both acute and chronic pain and should be recommended routinely. These include:

• Rest and activity modification in acute injury

• Early mobilisation and physiotherapy in musculoskeletal pain

• Heat or cold therapy
• Sleep optimisation
• Weight management
• Stress reduction and relaxation techniques

• Cognitive behavioural approaches in chronic pain

Education and reassurance are particularly important. Understanding the nature of the condition and expected recovery time can reduce anxiety and improve adherence to treatment plans.

Figure 1

Pharmacological Management: Stepwise Approach

Analgesic therapy should follow a stepwise model, using the lowest effective dose for the shortest necessary duration and tailoring treatment to the individual patient.

Paracetamol

Paracetamol is widely used as first-line therapy for mild to moderate nociceptive pain and fever. It acts centrally to inhibit prostaglandin synthesis and modulate serotonergic pathways.

It is particularly suitable for:

• Headache and migraine
• Musculoskeletal pain
• Osteoarthritis
• Dental pain
• Post-procedural pain
• Patients in whom NSAIDs are contraindicated

Dosing and Safety

The usual adult dose is 0.5–1 g every 4–6 hours, with a maximum of 4 g per day. Lower maximum daily doses are recommended in older adults, low body weight, chronic alcohol use or liver disease. Pharmacists must remain vigilant for duplicate therapy in combination products and counsel on the risk of inadvertent overdose.

NSAIDs

NSAIDs are effective for inflammatory pain but carry significant gastrointestinal, cardiovascular and renal risks. They should be used at the lowest effective dose for the shortest duration, with topical formulations preferred in older adults or those at higher systemic risk.

Key counselling points include:

• Take with food
• Avoid in patients with peptic ulcer disease or severe heart failure

• Review concurrent anticoagulants or corticosteroids
• Consider gastroprotection in high-risk patients

Table 3: Medicine Overuse Headache Thresholds

Combination Analgesics

Paracetamol combined with weak opioids may be appropriate for short-term management of moderate acute pain when first-line therapy is insufficient. These products should be used for limited durations, with clear counselling on:

• Maximum paracetamol dose
• Sedation and driving
• Constipation prevention
• Avoidance of alcohol
• Signs of dependence or overuse

Neuropathic Pain and the Role of Referral

Neuropathic pain presents a particular challenge in community pharmacy, as it often does not respond adequately to simple analgesics such as paracetamol or NSAIDs. Patients may describe burning, shooting, stabbing or electric-shock-like sensations, often accompanied by numbness, tingling or allodynia. Common causes encountered in primary care include diabetic peripheral neuropathy, post-herpetic neuralgia, radiculopathy and trigeminal neuralgia.

While pharmacists cannot initiate prescription-only neuropathic agents, they play a critical role in recognising characteristic symptoms, excluding red flags, and facilitating timely referral. Adjuvant medicines such as tricyclic antidepressants, SNRIs and gabapentinoids are often required, alongside non- pharmacological interventions including physiotherapy and psychological support. Ongoing pharmacy involvement is essential to support adherence, manage side-effects such as sedation or dizziness, and reinforce realistic expectations regarding gradual onset of benefit.

Management of Common Pain Presentations in Community Pharmacy

Headache and Migraine

Tension-type headache and migraine are frequent reasons for OTC analgesic requests. Paracetamol or NSAIDs are first-line for mild to moderate episodes. Pharmacists should assess frequency, associated symptoms (nausea, photophobia, aura), and medicine use patterns to identify possible medication overuse headache, defined as use of simple analgesics on more than 15 days per month or combination products on more than 10 days per month.

Counselling should include:

• Early treatment at onset of symptoms

• Adequate hydration and regular meals

• Limiting analgesic use to avoid rebound headache

• Referral for frequent or disabling attacks

Musculoskeletal and Back Pain

Acute low back pain is usually self-limiting. Advice should emphasise remaining active, avoiding prolonged bed rest, and using simple analgesia as required. Paracetamol may be used as baseline therapy, with short courses of NSAIDs if appropriate. Chronic back pain requires a multimodal approach, incorporating exercise, weight management and psychological strategies, with referral if neurological symptoms or red flags develop.

Osteoarthritis

Osteoarthritis is highly prevalent in older adults and a common source of chronic pain. First-line management includes education, weight reduction, strengthening exercises and topical NSAIDs. Paracetamol may be used for baseline analgesia, although its effect is modest. Oral NSAIDs should be used cautiously, taking cardiovascular and gastrointestinal risk into account. Pharmacists can support adherence, encourage realistic goals and monitor for adverse effects.

Dental Pain

Analgesics can provide temporary relief, but definitive dental assessment is essential. Pharmacists should discourage repeated short-term use of opioid-containing combinations and ensure patients understand the importance of urgent dental review, particularly in the presence of swelling or systemic symptoms.

Dysmenorrhoea

NSAIDs are first-line due to their inhibition of prostaglandin synthesis. Heat therapy and lifestyle measures may also help. Referral is warranted for severe, progressive or atypical symptoms, or where pain interferes significantly with daily activities.

Special Populations

Older Adults

Age-related physiological changes and polypharmacy increase susceptibility to adverse drug reactions. Paracetamol is generally preferred, while NSAIDs should be used with caution or avoided. Topical preparations and non- pharmacological strategies are often safer. Pharmacists should also consider falls risk, cognitive impairment and renal function.

Pregnancy and Breastfeeding

Paracetamol remains the analgesic of choice in pregnancy. NSAIDs should be avoided, particularly in the third trimester. Persistent or severe pain requires medical assessment to exclude underlying pathology.

Patients with Hepatic or Renal Impairment

Dose adjustments and careful selection of analgesics are essential. Paracetamol dosing should be reduced in liver disease, and NSAIDs generally avoided in moderate to severe renal impairment. Pharmacists should review all medicines for potential nephrotoxicity and advise on hydration.

Preventing Misuse, Dependence and Medicine-Related Harm

The increasing awareness of opioid-related harms highlights the importance of responsible analgesic use. Community pharmacists are well placed to identify patterns of frequent or escalating use, provide brief interventions, and liaise with prescribers when concerns arise.

The Evolving Role of Community Pharmacy in Pain Management

As primary care services expand and multidisciplinary working becomes more integrated, pharmacists are increasingly involved in structured minor ailment services, prescribing roles and chronic disease management. In the context of pain, this includes early intervention, optimisation of analgesic therapy, prevention of complications and contribution to holistic, patient- centred care pathways.

Conclusion

Pain management is a core component of community pharmacy practice and an area where pharmacists can have a significant impact on patient outcomes. Through structured assessment, evidence-based use of analgesics, vigilant safety monitoring and timely referral, pharmacists support both effective symptom relief and the prevention of medicine-related harm. A patient-centred, holistic approach, underpinned by ongoing professional development, is essential to meet the evolving needs of individuals living with both acute and chronic pain.