A mini stroke can be caused by a blood clot in an artery of the brain or a blood clot that travels to the brain from the body, explains the National Center for Biotechnology Information. Other causes include blood vessel injury and narrowing of a blood vessel in the brain.
A mini stroke is a transient ischemic attack, or TIA, and is a warning sign of an impending stroke, according to the National Center for Biotechnology Information. Risk factors include hypertension, atrial fibrillation, diabetes and a family history of stroke. Other risk factors include increasing age, smoking, race and high cholesterol. A mini stroke does not cause permanent damage to the brain. It occurs suddenly and symptoms resolve within a few minutes to a couple of hours.
A mini stroke can cause sudden weakness, numbness and paralysis in the face, arm or leg, explains Mayo Clinic. Other symptoms include slurred or garbled speech, difficulty understanding others, dizziness, loss of balance, and blindness in one or both eyes. One in three people experience a real stroke within a year of a mini stroke. The treatment approach is aimed at stroke prevention and involves the use of anti-platelet drugs, anticoagulants, surgery or angioplasty.