Food poisoning symptoms usually hit within a few hours of eating contaminated food. Stomach flu can take up to forty-eight hours after exposure to begin to affect you and the symptoms usually come on slowly. Stomach Flu Causes. Like influenza, stomach flu is caused by a virusâusually one of the following:
Rating Newest Oldest. Best Answer: Cellulitis near the skin surface usually takes at least 4-5 days to go away with an ointment, and then a scab might remain for another week. The deeper it is the longer it takes.
The symptoms of cellulitis include: 1  Skin rash that begins suddenly and spreads quickly within 24 hours. 2  Areas of inflamed red skin that grow larger. 3  Tenderness in the affected area. 4  Pain. 5  Skin that appears tight or stretched. 6  Fever.