CBS.com; CBS All Access; CBS News; CBSN; Watching Live TV. All Access Live TV; TV Provider
Thick blood may also be caused by the presence of harmful pathogens such as fungi, viruses, bacteria, and parasites. These pathogens can actually activate a coagulation response in the body as a way to avoid being attacked by the bodyâs immune system.
People taking blood thinners are more at risk from this type of damage since their blood clotting is already restricted. Injections can also be the cause of subcutaneous hematoma (which I get on a regular basis from my medication, Clexane). When an injection punctures the skin on the tummy or thigh it can graze, or pierce straight through, a blood vessel causing blood to seep out into the fatty tissue. If you're injecting Heparin or blood thinners, this can make hematoma worse because your clotting is restricted. Source.