Chronic exposure may worsen cardiovascular symptoms in some people. Symptoms often worsen rapidly and may progress to unconsciousness. Symptoms may temporarily worsen however, during alcohol withdrawal or benzodiazepine withdrawal. The flu can worsen chronic health problems. It may worsen the symptoms of asthma. As dementia progresses, initial symptoms generally worsen. Antipsychotics typically worsen symptoms in people who suffer from depersonalisation disorder. The symptoms may also worsen during pregnancy or after childbirth. On quitting, withdrawal symptoms worsen sharply, then gradually improve to a normal state. Change in activity may include avoiding activities that worsen symptoms. Therefore, they worsen the flu symptoms. Hyperinflation may also worsen during an exacerbation. Nocturia symptoms also often worsen with age. Smoking may worsen symptoms, and stopping is recommended. Once the injury has occurred, the symptoms should not worsen.