What Causes Brain Atrophy?

Brain atrophy is a radiological finding characterized by abnormal reduction in brain cells and shrinkage of brain tissue, resulting from aging, traumatic brain injury, neurological disorders, infections, or other causes.Clinically, common causes of brain atrophy include trauma, cerebrovascular disease, encephalitis, brain tumors, and recurrent epileptic seizures.

Brain atrophy can occur at any age. Mild cerebral atrophy associated with advancing age is a physiological and normal phenomenon; however, when atrophy occurs prematurely, progresses rapidly, or deviates significantly from expected age-related changes, it may indicate an underlying pathological condition.In children, brain atrophy may be linked to congenital factors; in adolescents, it may relate to growth and developmental abnormalities; and in middle-aged and older adults, it is commonly associated with advanced age, arteriosclerosis, hypertension, and cerebrovascular disease.