Concussion is usually a mild condition where the brain has been injured. Clinically, it manifests as temporary disturbances in consciousness, typically not exceeding half an hour. Another symptom is recent memory loss, as the individual cannot recall the events during the injury. There may also be a decrease in blood pressure or pallor at the time of the injury. Following the injury, symptoms such as dizziness, headache, loss of appetite, nausea, memory decline, lack of concentration, or tinnitus can occur. Generally, with 1-2 weeks of treatment, most people can recover from a concussion, so it is not considered a very serious condition.