my husband is 33 years old and on November the 13th he had a stroke in the left lower region of his brain. After finding this out they then realized that he also had a right sided vertebral dissection which was inoperable because of its location behind bone fragment. They are treating him with a blood thinner and he is scheduled to return for a follow up visit on the 22nd of January. However, his neck began hurting him earlier this week so we scheduled another CT which he had today. The results show that the tear has gotten a bit bigger. The Dr told me that this is common with dissections, they can get bigger before they get better. So they are starting him on a blood pressure medication to slow down the flow of his blood. Is this common for the tear to grow in size before it heals from the blood thinner?