Flystrike
Often found on hedgehogs lying out in the sun, and especially around wounds and moist areas of the body. Fly eggs look like clumps of tiny grains of rice and each has to be picked off immediately before they turn into dreaded maggots.
"No Eyes"/Staggering
Both symptoms of dehydration, the eyes are there but shrunk back into the eye sockets. Hedgehog will need special rehydrating fluids either orally or subcutaneous if very weak. While awaiting help, International Rehydrating Fluid can be made by mixing 1 tablespoon of sugar and 1 teaspoon of salt in 2 pints of warm water and offering in a low non tip pot.
Maggots
No easy way, each has to be picked off with blunt ended tweezers and flushed out of wounds.
Ringworm
Not a worm at all but a fungus infection which often looks like a covering of grey ash and is easily treated with a special fungicide.
Disturbed Nests
DO NOT TOUCH THE BABIES!
Replace everything as it was and protect from further disturbance and weather. Check the surrounding area carefully for any escaped babies.
Wounds
Best left to the experts.
Ligatures (Netting etc.)
Cut away if you can but do not release him. The ligature may have caused the flesh to die off under the skin (pressure necrosis), and the hedgehog will need to come into care for two weeks for observation.