Brain atrophy includes both physiological and pathological types. Physiological brain atrophy generally occurs as age increases, similar to how wrinkles appear on the face. This type does not usually present symptoms and typically does not require treatment, as some degree of brain shrinkage may happen with age. Pathological brain atrophy, however, can occur in younger individuals and requires investigation to determine the underlying cause. Diagnostic tests should be conducted to clarify the cause of the atrophy and identify any specific diseases, which will guide the treatment plan. Additionally, some patients may experience atrophy due to past events like cerebral hemorrhage or stroke, which are caused by specific lesions. In such cases, treating the original disease is the approach taken, so the treatment plan for brain atrophy should be based on the specific circumstances.