A silent stroke refers to a stroke that doesn't cause any noticeable symptoms. Most strokes are caused by a clot that blocks a blood vessel in the brain. The blockage prevents blood and oxygen from reaching that area, causing nearby brain cells to die.
Yes, you can have a stroke and not know it. A stroke's effects can be undetectable if the stroke is small or if the tissue damaged does not serve a critical function. Evidence of the stroke would show on a CT scan or an MRI of the brain, but it might not produce symptoms.
Silent Doesn't Mean Harmless
While silent strokes often pass undetected, the damage they cause can be quite noticeable. Once you suffer from a silent stroke, your chances of suffering from more strokes in the future increase. The damage caused to the brain can result in significant cognitive decline or even death.
A silent stroke is most often caused by reduced blood flow in one of the smaller arteries that feed the brain. It can occur without noticeable symptoms if it affects a part of the brain that doesn't control major movements or vital functions.
If a person has a brain scan and their doctor detects one or multiple silent strokes, they may prescribe medications. For instance, blood thinning medications can help to lower blood pressure, and cholesterol medications can help to lower low-density lipoprotein (LDL) cholesterol.
It's known that stress from work is bad for your health, including causing an increase in your risk for cardiovascular disease, particularly high blood pressure and heart disease. If you've wondered specifically if stress can cause a stroke, too, the answer is unfortunately, yes.
The only way to tell the difference between a ministroke and a stroke is by having a doctor look at an image of your brain with either a CT scan or an MRI scan. If you've had an ischemic stroke, it's likely that it won't show up on a CT scan of your brain for 24 to 48 hours. An MRI scan usually shows a stroke sooner.
MRI is best at detecting silent strokes, according to the statement. Its use for brain imaging has gone up dramatically over the years to investigate concerns about memory and cognition, stroke, dizziness, unusual headaches or Parkinson's disease, Gorelick said.
Call 9-1-1 immediately if any of these signs of stroke appear: Numbness or weakness in the face, arm, or leg; Confusion or trouble speaking or understanding speech; Trouble seeing in one or both eyes; Trouble walking, dizziness, or problems with balance; severe headache with no known cause.
During a silent stroke, an interruption in blood flow destroys areas of cells in a part of the brain that is "silent," meaning that it doesn't control any vital functions. Although the damage will show up on an MRI or CT scan, it's too small to produce any obvious symptoms.
All types of strokes — including TIAs — require immediate medical attention. Because a TIA may eventually lead to a larger stroke, diagnosis and treatment are important.
What Happens if a Mini Stroke Goes Untreated? A mini stroke may resolve on its own, but it's difficult to know just how serious the circumstances are without a thorough medical workup. Familiarizing yourself with these symptoms will allow you to act quickly, which is crucial for avoiding permanent brain damage.
You will likely have a head CT scan or brain MRI. A stroke may show changes on these tests, but TIAs will not.
But some strokes don't cause any noticeable symptoms. These silent strokes still increase dementia risk. With both silent and apparent strokes, the risk of vascular dementia increases with the number of strokes that occur over time. One type of vascular dementia involving many strokes is called multi-infarct dementia.
An MRI scan is most often used. This type of scan uses a strong magnetic field and radio waves to create an image of your brain.
Usually, a silent stroke is discovered unexpectedly on a brain CT or brain MRI. These imaging tests can easily distinguish past strokes from recent strokes.
You must stop driving for at least 1 month after a transient ischaemic attack ( TIA ) or mini-stroke. This includes amaurosis fugax or retinal artery fugax. You can restart only when your doctor tells you it is safe.
A silent stroke (or asymptomatic cerebral infarction) is a stroke that does not have any outward symptoms associated with stroke, and the patient is typically unaware they have suffered a stroke.
The signs and symptoms of a TIA resemble those found early in a stroke and may include sudden onset of: Weakness, numbness or paralysis in the face, arm or leg, typically on one side of the body. Slurred or garbled speech or difficulty understanding others. Blindness in one or both eyes or double vision.
About 1 in 3 people who has a TIA goes on to experience a subsequent stroke. The risk of stroke is especially high within 48 hours after a TIA . The symptoms of a TIA are similar to those of a stroke and include: Numbness or muscle weakness, usually on one side of the body.
Around 70%reported that their TIA had long- term effects including memory loss, poor mobility, problems with speech and difficulty in understanding. 60%of people stated that their TIA had affected them emotionally.
It has been found in a study that stress apparently raises the risk of a Stroke or Transient Ischemic Attack (TIA) by 59%. A TIA is a mini-stroke caused by a temporary blockage of blood flow to the brain.
In research studies, lack of sleep has been correlated with a greater likelihood of having a stroke. Sleep deprivation increases blood pressure, and high blood pressure is considered to be the leading risk factor for strokes.
According to the study authors, anger or emotional upset was linked to an approximately 30% higher risk of having a stroke within one hour of experiencing those emotions. Another potential stroke trigger revealed by the study was heavy physical exertion, although the evidence was less convincing.