The outlook depends on the cause. Most people recover within few hours or a day. While short-term<unk>  and vomiting are generally harmless, they may sometimes indicate a more serious condition. When associated with prolonged vomiting, it may lead to dehydration or dangerous electrolyte imbalances or both. Repeated intentional vomiting, characteristic of bulimia, can cause stomach acid to wear away at the enamel in teeth.
Nausea
Vomiting
Constipation
Flushing 
Fever
Allodynia
Arthralgia
Myalgia