“This process is called atherosclerosis,” the association says. “Clots can form on the areas of fatty material, and if a clot travels to the brain it causes a stroke or transient ischaemic attack (TIA or mini-stroke).”
Stroke due to small vessel disease
Small vessel diseases are often linked to having high blood pressure.
They are caused by damage to the tiny blood vessels deep inside the brain which make a stroke more likely.
Stroke due to bleeding in or around the brain
“High blood pressure can damage blood vessels inside the brain, causing bleeding in the brain,” the association says.