In clinical practice, we often see mild cases of concussion. After suffering from trauma, patients only show mild symptoms such as headache and dizziness, or may experience nausea. Some patients may not have any symptoms at all, and their recovery tends to be quick, often within two to three days, or even up to about 2 to 3 weeks to fully return to normal. However, for severe cases of concussion, symptoms such as headaches, dizziness, nausea, and vomiting are more pronounced, and some patients may exhibit certain mental, psychological, and behavioral disorders. In these cases, hospitalization is usually required, and the recovery period can be quite lengthy, lasting for over a month, or even up to three months.