Muscle Pain & Injury

muscle pain hamstring assessment with physiotherapist checking resisted knee flexion

Hamstring assessment for muscle pain.

Muscle pain can feel tight, sore, heavy, hot, crampy, or sharp. It may settle with simple care. It can also point to a muscle strain, bruise, tendon issue, joint referral, or nerve pain.

The first step is to work out what type of pain you have. Normal post-exercise soreness often behaves differently from an injury. For the broad injury group, start with soft tissue injuries. If your pain started after harder training, see delayed onset muscle soreness (DOMS).

If pain followed a sprint, lift, slip, fall, or sudden overload, treat it like an injury at first. If it keeps coming back, it may link to load, strength, skill, sleep, stress, or health factors. For early do’s and don’ts, see the HARM protocol.

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Muscle Pain: Quick Guide

DOMS: soreness that builds 12–48 hours after harder exercise.
Muscle strain: a sudden pull, sharp pain, weakness, or pain with stretch.
Contusion: a direct blow that causes bruising or a corked muscle.
Cramps: sudden muscle tightening, often linked with fatigue, heat, or load change.
Urgent signs: severe pain with marked weakness, swelling, or dark urine.

Is It Muscle Soreness or a Muscle Injury?

Muscle soreness usually feels broad and dull. It often affects a larger area after new or harder exercise. A muscle injury is more likely when pain starts suddenly, affects one clear spot, causes weakness, or hurts with stretch or effort.

Feature	More like DOMS	More like strain
Start	Builds later	Often sudden
Area	Broad soreness	One clear spot
Strength	Feels sore but works	May feel weak
Training	Often eases with light movement	May worsen with load

Common Causes of Muscle Pain

Muscle strain or tear

A pulled muscle, muscle strain, and muscle tear often mean the same thing. Muscle fibres have taken more load, speed, or stretch than they could manage. The injury may be mild, moderate, or severe. Read more about muscle strain.

DOMS, cramps, and bruising

New loads, heavy gym work, hills, sprints, or a big change in training can trigger DOMS. Sudden tightening may fit muscle cramps. A direct blow can bruise the muscle and cause swelling.

Trigger points and myofascial pain

Tight bands or sore spots can refer pain and make movement feel stiff. Some people may find trigger point therapy, therapeutic massage, or dry needling and acupuncture helpful as part of a full plan.

Health-related causes

Not all muscle pain starts in the muscle. Viral illness, medicine effects, poor sleep, stress, and some health issues may play a role. See your GP if pain is widespread, odd, worse than expected, or linked with fever, night sweats, weight loss, marked tiredness, or new weakness.

When Muscle Pain Needs Urgent Care

Seek urgent medical care if muscle pain is severe and comes with marked weakness, swelling, feeling very unwell, or dark red-brown urine. These signs can occur with rhabdomyolysis, which needs prompt care.

What Does a Muscle Injury Feel Like?

Muscle strain pain often follows a clear pattern. It may hurt when you contract the muscle, stretch it, or repeat the task that caused the injury.

Sudden pain, pull, or tearing feeling
Tenderness in one clear spot
Tightness, spasm, or guarding
Swelling or bruising, sometimes later
Weakness or loss of power
Pain with stretch or resisted movement
Reduced walking, running, lifting, or sport

How Is Muscle Pain Assessed?

A physiotherapy assessment can help find the likely tissue and the safest next step. Your physiotherapist may ask how the pain started, what makes it worse, your work tasks, your sport load, and whether any health signs need a medical check.

Assessment may include range of motion, strength tests, touch-based checks, balance, hopping, walking, or sport tasks. Scans are not always needed. They may help if a larger tear, tendon injury, or another issue is suspected.

How Do You Treat Muscle Pain After an Injury?

Most muscle injuries improve with the right mix of protection, movement, load, and time. Early care often focuses on relative rest, gentle movement, and support if needed. Then rehab rebuilds strength, control, speed, and trust in the muscle.

For a step-by-step plan, see soft tissue injury healing. For a broad Australian health guide, see Healthdirect Australia: muscle aches and pains.

muscle pain quadriceps stretch assessment during early physiotherapy rehabilitation

Quadriceps stretch during early rehab.

How Are Muscle Injuries Graded?

Grade 1: mild

Grade 1 strains involve a small amount of fibre overload. Pain is local. Strength loss is usually low. Many people do well with load advice, simple exercise, and a slow return to training.

Grade 2: moderate

Grade 2 strains involve more fibre damage. Pain, bruising, and weakness are clearer. Rehab often needs a staged plan to rebuild strength, movement, and speed.

Grade 3: severe

Grade 3 injuries are less common but serious. They may involve a large tear or full rupture. These injuries need early assessment. Some may need medical or surgical advice.

What Helps Muscle Injuries Recover Well?

Good recovery is not just rest. The muscle needs the right load at the right time. Too much load can flare pain. Too little load can leave the muscle weak.

Keep moving within tolerable pain.
Avoid sharp pain, sprinting, or heavy lifting early.
Use compression and elevation if swelling is present.
Use brief ice or heat if it helps comfort.
Rebuild strength in stages.
Add speed, stretch, and sport tasks when ready.

Can You Keep Training With Muscle Pain?

Sometimes you can keep training. You may need to change the exercise, range, load, speed, or volume. Light movement can help soreness. Training hard through sharp pain can slow recovery.

Your response	Best next step
Mild soreness that eases as you warm up	Keep it light and monitor symptoms.
Sharp pain during load	Stop that task and reduce load.
Worse pain the next day	Step back speed, load, or volume.
Better comfort, strength, and control	Build up with staged strength work.

When Can You Start Training Again?

Return to training depends on the muscle, the injury grade, and your sport or work needs. Hamstring, groin, thigh, and calf injuries often need care because speed, stretch, and fatigue can show hidden weakness.

A simple return checklist includes:

Walking and daily tasks feel comfortable.
Strength is close to the other side.
Stretch and effort do not cause sharp pain.
Running, hopping, or change of direction starts in stages.
Weekly load rises slowly.

muscle pain step-up strengthening for safe return to activity

Step-up strength for return to activity.

Muscle Pain FAQs

What causes muscle pain?

Muscle pain can come from overload, DOMS, cramps, bruising, trigger points, or a strain. It can also come from a joint, nerve, illness, medicine effect, or health issue. Widespread or odd symptoms need medical review.

How do I tell DOMS from a muscle strain?

DOMS usually builds 12–48 hours after harder exercise. It feels like broad soreness. A strain more often feels sharp when it happens. It may then hurt with stretch, effort, running, lifting, or change of direction.

Should I use ice or heat for muscle pain?

Use what helps comfort and movement. Brief ice may help early pain after an injury. Heat may feel better later when stiffness is the main issue. Neither replaces gradual loading and a clear plan.

When should I see a physiotherapist for muscle pain?

Book an assessment if you felt a sudden pull, have bruising or weakness, cannot train as normal, keep re-injuring the same area, or symptoms do not improve within 10–14 days.

When is muscle pain urgent?

Seek urgent medical care if pain is severe and comes with marked weakness, swelling, feeling very unwell, or dark red-brown urine. These signs may point to rhabdomyolysis or another serious issue.

What to Do Next

If your muscle pain is mild and improving, keep activity comfortable. Build back up slowly. Avoid sudden jumps in speed, load, volume, or stretch until strength and control feel sound.

If you felt a sudden pull, cannot train as normal, keep re-injuring the same area, or symptoms are not improving, a physiotherapist can assess the injury and guide a staged return to work, sport, running, lifting, or daily activity.

Muscle & Soft Tissue Products

These muscle and soft tissue products are commonly used by our physiotherapists to relax or loosen muscles, improve strength, comfort, flexibility, and home exercise programs.