A brain blood clot, also known as a cerebral thrombosis or embolism, occurs when a clot blocks a blood vessel in the brain, interrupting blood flow and potentially leading to stroke or other serious complications. If not treated immediately, a blood clot can be fatal. Thankfully, your body gives you some signs weeks before this is likely to happen, though this might not always be the case. Let us look at these 9 signs of brain blood clot that can appear weeks before a stroke. (Source: Healthline)