A “mini-stroke,” medically known as a **transient ischemic attack (TIA)**, can be easy to miss because symptoms may disappear within minutes or hours.
But temporary symptoms do **not** mean the episode was harmless.
A TIA happens when blood flow to part of the brain is temporarily blocked. Its symptoms are essentially the same as those of a stroke, and the American Stroke Association describes a TIA as a **“warning stroke”** because it can signal a higher risk of a full stroke afterward.
If sudden neurological symptoms appear, emergency medical assessment is needed even if the person feels completely normal again afterward.
## 1. Sudden Weakness on One Side
One of the most important warning signs is sudden weakness affecting the:
* Face
* Arm
* Hand
* Leg
It typically occurs on one side of the body.
A person may suddenly be unable to grip normally, lift one arm, or walk steadily. The weakness may disappear quickly during a TIA, which is why some people mistakenly ignore it.
Ask the person to raise both arms. If one arm drifts downward or cannot be lifted normally, seek emergency help.
## 2. Numbness or Loss of Sensation
Sudden numbness can occur with or without obvious weakness.
It may feel like:
* Pins and needles
* Loss of sensation
* A strange heavy feeling
* Numbness of one side of the face
* A numb arm or leg
Sudden one-sided numbness is a recognized symptom of both stroke and TIA.
Do not assume it is simply caused by sleeping in an awkward position if it appears suddenly without a clear explanation.
## 3. Facial Drooping
A TIA can temporarily weaken the muscles on one side of the face.
You may notice that:
