Severe leg or joint aches coming on over a few hours can be a sign of septicaemia (blood poisoning) as can occur with meningoccal disease or meningitis. 6. Pain on waking in the morning ...
Delayed onset muscle soreness (or DOMS if you're into gym-speak) can range from a slight ache hours after a routine, to "ouch, don't touch my damn ... it in the back of your legs, and then return ...