Mycotic aneurysm is a type of aneurysm that is caused by a bacterial or fungal infection. Mycotic aneurysm can occur in any artery in the body, but is most common in the abdominal aorta, femoral arteries, and cerebral arteries. Some synonyms for mycotic aneurysm include infectious aneurysm, septic aneurysm, bacterial aneurysm, and infected aneurysm. These terms all refer to aneurysms that are caused by an infection. Mycotic aneurysm is a serious condition that requires prompt treatment to prevent rupture, which can lead to life-threatening complications. Symptoms of mycotic aneurysm may include fever, pain, and swelling near the affected artery.