Maybe it's a sprained ankle that still feels wobbly months later. Or colds that seem to leave you coughing for weeks afterward.
Sometimes, minor health problems hang on for much longer than expected or become chronic nuisances. That might be because with age, the natural weakening of the immune system slows the healing process. But a factor such as medication overuse or a condition you might not know you have — such as asthma — can also play a role.
