Patients with mild concussion typically exhibit brief disturbances in consciousness lasting from several seconds to several minutes after the injury, usually not exceeding half an hour, along with retrograde amnesia. Some patients may also experience varying degrees of headache, dizziness, nausea, vomiting, and other clinical symptoms. The vast majority of mild concussion patients can recover within five to seven days with rest and conditioning, meaning that mild concussion symptoms, including vomiting, can resolve within 5-7 days.