A hematoma is pooling blood outside the blood vessels causing pain, discoloration, and swelling.
Aneurysms are bulges in blood vessels with have serious consequences. They're scary because they often have no symptoms.
This site offers information designed for educational purposes only. You should not rely on any information on this site as a substitute for professional medical advice, diagnosis, treatment, or as a substitute for, professional counseling care, advice, diagnosis, or treatment. If you have any concerns or questions about your health, you should always consult with a physician or other healthcare professional.