A. The SwabTest DNA paternity test is fast, simple, and painless. DNA is collected using special swabs called buccal swabs.. The buccal swabs are rubbed gently on the inner cheek inside the mouth to collect DNA. Buccal swabs are painless and can be used to collect samples from individuals at any age. Back to Top.
Head trauma . Injury is the most common cause of bleeding in the brain for those younger than age 50. High blood pressure . This chronic condition can, over a long period of time, weaken blood vessel walls. Untreated high blood pressure is a major preventable cause of brain hemorrhages.
Problems that can lead to coma include: 1  Trauma: Head injuries can cause the brain to swell and/or bleed. 2  Swelling: Swelling of brain tissue can occur even without distress. 3  Bleeding: Bleeding in the layers of the brain may cause coma due to swelling and compression on the injured side of the brain. This compression causes the brain to shift, causing damage to the brainstem and the RAS (mentioned above).