What Causes Brain Atrophy?

Cerebral 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 cerebral atrophy include trauma, cerebrovascular disease, encephalitis, brain tumors, and recurrent seizures in epilepsy.

Cerebral atrophy can occur at any age. Mild brain tissue shrinkage 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, cerebral atrophy may be linked to congenital factors; in adolescents, it may relate to growth and development; and in middle-aged and older adults, it is commonly associated with advanced age, arteriosclerosis, hypertension, and cerebrovascular disease.