Warning signs: when to stop and get help
These follow our hiking, football yoga and balance guides word for word. This is general information, not a diagnosis. In the US, call 911 where this page says 999, and contact your doctor or urgent care where it says NHS 111.
On the hill: call 999 or 112
For an injury, illness or someone lost or overdue, dial 999 or 112 and ask for the Police, then Mountain Rescue.
Sources 26, 16
Sprains, knees and possible fractures
Call 999 or go to A&E if you heard a crack, the injured part has changed shape or points at an odd angle, it's numb or tingling, or the skin has turned blue or grey or is cold. Get help from NHS 111 if it's very painful or swollen, you can't put weight on it or walk more than a few steps, or a knee locks or gives way.
Source 44
A knee injury
Go to A&E (accident and emergency) if you've injured your knee and it has changed shape, it becomes very swollen very quickly, you felt a pop or snap, you can see bone sticking out, or it's bleeding heavily. Don't drive yourself: ask someone to take you, or call 999 if the pain means you can't move your leg to get there.
Get advice from NHS 111 now: you cannot move the knee or put any weight on it, or it is very painful, badly swollen or has changed shape, or it locks, gives way or clicks painfully. A pop, quick swelling and a knee that gives way point to an ACL injury: our ACL injury guide says what to do.
After a fall: call 999
If someone has fallen and may have hurt their head, neck, back or hip, or can't get up. For sudden unsteadiness with signs of a stroke: a face drooping on one side, weakness in one arm, or speech problems; also sudden blurred vision or loss of sight, feeling dizzy or falling over, or a severe headache. Call even if the signs stop.
After a fall: NHS 111 or an urgent GP appointment
If someone has fallen and may be in pain, injured or unwell. In the US, contact your doctor or urgent care.
Chest pain or fainting: call 999
Call 999 if:
- You get sudden pain or discomfort in your chest that doesn't go away; it can feel like squeezing or pressure, burning or indigestion.
- The pain spreads to your left or right arm, or your neck, jaw, stomach or back.
- You have chest pain and feel sweaty, sick, light-headed or short of breath.
- Someone faints while exercising, can't be woken within 1 minute, or has chest pain or a pounding, fluttering or irregular heartbeat.
Sources 45, 46
Heatstroke: call 999
The NHS says to call 999 for signs of heatstroke: still being unwell after 30 minutes of resting somewhere cool, being cooled and drinking; a very high temperature; hot skin that isn't sweating; a fast heartbeat; fast breathing or breathlessness; confusion and lack of coordination; a seizure; or loss of consciousness.
Source 42
Hypothermia and frostbite
Call 999 or go to A&E (accident and emergency) for hypothermia, such as shivering, pale cold skin, slurred speech, slow breathing, tiredness or confusion, and for frostbite with hard, frozen skin, swelling and loss of feeling, or blisters. Mountain Rescue England and Wales lists the signs to watch for in others: "Disorientation, confusion, shivering, tiredness, pale complexion and loss of circulation in hands or toes", adding that children and older people are especially at risk.
Sources 47, 26
Altitude: get medical help straight away
The NHS says to get medical help immediately, and go 300 to 1,000 m lower if you can, if someone with altitude sickness feels very unwell, is confused, has problems with balance or coordination, sees or hears things that aren't there, is short of breath at rest, has a cough with frothy or bloody spit, has blue or grey skin, lips, tongue or nails, or is very sleepy or hard to wake.
Source 48
During yoga
Stop if you feel dizzy or light-headed. Keep a counter or wall within reach, and have someone nearby for the hardest moves if you've fallen recently (our suggestion, as in our older adults guide).
Our knee guides use this rule: rate your knee pain from 0 to 10 during and after exercise; 0 to 2 counts as safe, up to 5 as acceptable and above 5 as too much, and your knee should be back to its usual level by the next morning.