Lacunar strokes caused by widening of arteries in brain, study suggests

Lacunar strokes affect about 35,000 people in the UK each year and may be caused by widening of arteries in the brain, making some medications ineffective. Researchers have uncovered the potential cause of this type of stroke, which accounts for a quarter of all strokes in the UK. This finding could explain why lacunar strokes are not responsive to certain treatments.