overdraft facility. A credit agreement made with a financial institution that permits an account holder to use or withdraw more than they have in their account, without exceeding a specified maximum negative balance.
Without treatment, moyamoya disease can be fatal. Left untreated, individuals with the disease will experience mental decline and multiple strokes due to the narrowing of the arteries. Related: 1  Learn the signs and symptoms of a stroke.
The childhood form of the disease causes stroke symptoms, such as slurred speech, headaches and seizures. Young adults and older people with Moyamoya may also have the hemorrhagic form of the disease, in which a brain hemorrhage âbleeding in the brainâis a symptom.arning signs of a brain hemorrhage can include: 1  nausea. 2  vomiting. 3  fatigue and lethargy. 4  changes in vision. 5  severe headache. 6  numbness in part of the body.