Out in the day
Hedgehogs are nocturnal - out in the day is a sure sign that something is wrong. He could be orphaned, injured, poisoned, ill, cold or hungry. In the winter he must weigh at least 600grms to be able to survive hibernation.

Check for wounds
Flies eggs and maggots must be removed immediately. Check carefully around wounds, moist areas of body and under armpits.

Fly Eggs
These are best removed dry, using fine tweezers if among spines (an old toothbrush can also used to brush them out).

Maggots
Best picked out with long tweezers.

Wounds
Best left to the experts.

Shock and dehydration
Shock will kill, wrap the casualty in a warm blanket, keep quiet and place on a warm hot water bottle or low watt heat pad, allowing space to move away if necessary. Hedgehogs should always feel warm to the touch.
Dehydration, offer Lectade mineral replacement drink (available from vets) or International rehydration fluid using one tablespoon sugar and one teaspoon salt mixed in two pints warm water. This may need to be syringe fed, very slowly making sure not to flood the hedgehogs mouth

Food
Offer good quality cat or dog food and water to drink. Never give cows milk.

Fleas
Don't worry about fleas, they are host specific and will not live on your pets or carpets. Never use dog or cat flea spray as these are too strong for hogs and the toxins are more likely to kill the patient.

Hibernation

hogs "go down" as early as October, some do not hibernate at all. Disturbing a hibernating hog could kill it.