Pain
What pain is — the main types (nociceptive, inflammatory, neuropathic), causes, when to seek help, and UK treatment options.
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Pain UK: Types, Causes & When to Seek Help
A clinical overview of pain — what it is, the main types (acute, chronic, nociceptive, neuropathic, inflammatory), common causes, when to seek help, and what treatments are available.
Key fact: Pain affects around 28 million adults in the UK and is the single most common reason people seek healthcare. Most pain is treatable — matching the right medicine to the right type of pain is the key. This page is the umbrella guide; for specific conditions or treatments, follow the links throughout.
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View Pain Relief Treatments →What Is Pain?
Pain is the body’s warning signal — an unpleasant sensory and emotional experience that tells you something is wrong. It is processed by the nervous system, which carries signals from the source of injury to the spinal cord and brain, where they are interpreted as pain.
Although pain feels uniformly ‘bad’, it is not one thing. The mechanism that produces it — tissue damage, inflammation, or nerve dysfunction — determines which treatment will work best. Matching the type of pain to the right treatment is the single most important step in effective pain management.
Types of Pain
Nociceptive Pain
From tissue damage — cuts, burns, sprains, bone fractures. Often described as sharp or aching. Responds well to paracetamol and NSAIDs.
Inflammatory Pain
From active inflammation — arthritis, gout, soft tissue injury, post-operative. Often hot and swollen. NSAIDs (ibuprofen, naproxen) target this directly.
Neuropathic Pain
From damaged or dysfunctional nerves — sciatica, diabetic neuropathy, post-shingles. Often burning, shooting, or electric-shock-like. Needs specific medicines (amitriptyline, pregabalin) — NSAIDs do not work.
Nociplastic / Central Pain
From altered processing in the nervous system itself — fibromyalgia, some chronic widespread pain. Requires a different approach combining medication, exercise, and psychological therapies.
Common Causes of Pain
- Injury — sprains, strains, fractures, soft tissue trauma
- Inflammation — arthritis, gout, tendinitis, bursitis
- Mechanical problems — back pain, sciatica, carpal tunnel syndrome
- Period pain (dysmenorrhoea) — prostaglandin-driven uterine cramping
- Headache and migraine — tension, migraine, cluster, medication-overuse
- Nerve damage — diabetic neuropathy, post-shingles, sciatica
- Chronic conditions — fibromyalgia, endometriosis, persistent musculoskeletal pain
- Surgery and recovery — post-operative and procedural pain
Acute vs Chronic Pain
Acute pain is short-term — usually a clear cause (injury, surgery, infection), resolves as healing happens, and serves a protective function. Acute pain is usually well controlled with paracetamol and NSAIDs.
Chronic pain lasts longer than 3 months or persists beyond the expected healing time of an injury. It often involves changes in the nervous system itself — pain pathways become “sensitised” and the nervous system continues sending pain signals even after the original cause has resolved. NICE NG193 covers chronic primary pain in the UK and emphasises that this often needs a different treatment approach combining medication, exercise, and psychological support.
If pain has lasted more than 3 months, isn’t getting better, and is affecting your daily life or mood, speak to your GP. Chronic pain is treatable but often needs a different strategy from acute pain. See: Chronic Pain Treatment UK →
Pain Treatment Options
The right treatment depends on the type and cause of pain.
| Pain type | First-line medicine | When to step up |
|---|---|---|
| Mild nociceptive (headache, mild aches) | Paracetamol | Add or switch to NSAID if pain inflammatory |
| Inflammatory (arthritis, gout, period pain, injury) | NSAID (naproxen, ibuprofen 600mg, diclofenac gel) | Prescription strength + PPI cover |
| Localised joint/soft tissue | Topical NSAID (diclofenac gel) | Oral NSAID if not responding |
| Migraine | Triptan + naproxen (NICE NG150) | Preventive medication if attacks frequent |
| Neuropathic | Amitriptyline, duloxetine, pregabalin (NICE NG173) | Specialist referral if not responding |
| Chronic primary pain | Exercise + psychological therapies (NICE NG193) | NICE NG193 does not recommend long-term opioids or paracetamol |
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Start Online Consultation →When to See a Doctor About Pain
Call 999 or go to A&E for: sudden severe headache (“worst ever”), chest pain, pain after major injury, pain with confusion or loss of consciousness, pain with loss of bladder or bowel control, pain in a hot swollen joint with high fever, or any pain that feels life-threatening.
See your GP or use an online prescriber for:
- Pain that does not improve after a few days of over-the-counter treatment
- Pain that is interfering with sleep, work, or daily activities
- Pain that is getting progressively worse over time
- Pain alongside other symptoms — fever, weight loss, night sweats
- Pain that has lasted longer than 3 months
- New severe headache in anyone over 50
- Pain affecting your mood or mental health
Pain-Related Conditions
This page is the umbrella overview. For specific conditions, see the dedicated pillars:
Back Pain
The UK’s leading cause of disability — causes, types, red flags, when to seek help.
Gout
Uric acid crystal arthritis — symptoms, triggers, attack management, prevention.
Period Pain
Primary & secondary dysmenorrhoea, the prostaglandin mechanism, when to investigate.
Sciatica
Nerve root pain — causes, red flags, cauda equina warning.
Osteoarthritis
Joint ‘wear-and-tear’ with inflammation, NICE topical-first management.
Rheumatoid Arthritis
Autoimmune inflammatory arthritis — early symptoms, urgent diagnostic window.
Musculoskeletal Pain
Hub for back pain, sprains, soft tissue injuries, tendinopathy.
Endometriosis
Severe progressive period pain — symptoms, types, the 8-year UK diagnostic delay.
Fibromyalgia
Central sensitisation — widespread pain, fatigue, current understanding.
Carpal Tunnel Syndrome
Median nerve compression — tingling, numbness, diagnosis.
Migraine
Neurological condition, not just a headache — phases, triggers, when to consider triptans.
Pain Relief Guides
Detailed guides on specific medicines and how to use them:
Frequently Asked Questions
What are the main types of pain?
Pain is usually grouped into three main types. Nociceptive pain comes from tissue damage (cuts, burns, sprains). Inflammatory pain comes from active inflammation (arthritis, gout, post-surgical). Neuropathic pain comes from nerve damage or dysfunction (sciatica, diabetic neuropathy). Each type responds best to different treatments — NSAIDs for inflammatory pain, paracetamol for mild nociceptive pain, and specific medicines such as amitriptyline or pregabalin for neuropathic pain.
When does acute pain become chronic pain?
Pain is considered chronic when it lasts more than 3 months, or persists beyond the expected healing time of an injury. Chronic pain often involves changes in the nervous system itself and may need different treatment than acute pain. NICE NG193 covers chronic primary pain management in the UK.
When should I see a doctor about pain?
See a doctor urgently for: severe sudden onset pain, pain after significant injury, pain with fever, pain with neurological symptoms (numbness, weakness, loss of bladder/bowel control), pain that is getting progressively worse, or pain that does not respond to over-the-counter treatment after a few days. Pain affecting your daily life, work, or mental health is also a valid reason to seek help.
Which painkiller is best for which type of pain?
Paracetamol suits mild non-inflammatory pain such as headache and fever. NSAIDs (ibuprofen, naproxen, diclofenac gel) are most effective for inflammatory pain (arthritis, gout, period pain, soft tissue injury). Triptans are first-line for migraine. Neuropathic pain requires different agents (amitriptyline, duloxetine, pregabalin). A prescriber can match the medicine to your pain type.
Can I get prescription pain relief online without a GP appointment?
Yes. Access Doctor provides prescription pain relief — naproxen, ibuprofen 600mg, diclofenac gel and others — following a short online consultation with GPhC-registered pharmacist independent prescribers. No GP appointment needed. Next-working-day delivery. GPhC pharmacy #9011198.
Can pain affect mental health?
Yes — chronic pain is strongly linked with anxiety and depression, and the relationship works both ways. Long-term pain can cause low mood, and low mood can amplify pain perception. NICE NG193 recommends psychological therapies alongside medication for chronic pain. If pain is affecting your mental health, this is a valid reason to seek GP support.
Get the Right Pain Relief Prescribed Online
Don’t wait for a GP appointment. Our GPhC-registered pharmacist independent prescribers will assess your pain and prescribe the right medicine. Same-day assessment, next-working-day delivery in discreet packaging. GPhC pharmacy #9011198.
View Pain Relief Treatments →References
- NICE NG193. Chronic pain (primary and secondary) in over 16s: assessment of all chronic pain and management of chronic primary pain. nice.org.uk/guidance/ng193
- NICE NG173. Neuropathic pain in adults: pharmacological management in non-specialist settings. nice.org.uk/guidance/ng173
- NICE NG150. Headaches in over 12s: diagnosis and management. nice.org.uk/guidance/ng150
- Fayaz A et al. Prevalence of chronic pain in the UK: a systematic review and meta-analysis of population studies. BMJ Open 2016;6:e010364. bmjopen.bmj.com
- NHS. Painkillers. nhs.uk/conditions/painkillers
Medical disclaimer: This article is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional for diagnosis and treatment. In a medical emergency, call 999.
