The frontal lobe is the brain tissue responsible for memory, thinking, emotion, mental and olfactory functions in human body. Once the frontal lobe is damaged, especially when the frontal lobe is damaged bilaterally, patients will show memory loss, slow thinking response, mental abnormalities, manifesting as mania or reticence, personality changes, and decreased sense of smell. Frontal lobe damage is usually seen in craniocerebral trauma, where the posterior occipital landing produces a hedge injury that causes frontal lobe contusion and hemorrhage. Injuries of medical origin can occur during surgery. Excessive strain on the frontal lobe during surgical removal of skull base tumors can cause frontal lobe contusions and hemorrhage. Tumors in the frontal lobe can directly damage the brain tissue in the frontal lobe, such as gliomas and metastases in the frontal lobe.