aneurysm
Vessel Bulge
Plain-language definition
A weakened, bulging area in a blood vessel wall. Microaneurysms - tiny outpouchings in retinal capillaries - are the earliest sign of diabetic retinopathy.
Where this term comes up
“It can result from age-related stretching of eyelid tissues, but sudden or variable ptosis can also reflect a nerve problem, myasthenia gravis, or rarely an aneurysm that needs emergency imaging.”
Symptom · Drooping Eyelid (Ptosis)
“Common causes include tumors, aneurysms, and enlarged muscles (as in thyroid eye disease).”
Condition · Compressive Optic Neuropathy
“Pupil abnormalities can point to optic nerve disease, brain lesions, autonomic dysfunction, or even a life-threatening aneurysm.”
Test · Pupil Examination
- Category
- Condition, finding, or disease process
- Also written as
- aneurysms
Pathology terms describe diseases, tissue changes, exam findings, or complications that can affect vision or eye comfort.
Related glossary terms
- MRI
Magnetic Resonance Imaging
- ischemia
Reduced Blood Supply
- ptosis
Drooping Upper Eyelid
- anisocoria
Pupils of Unequal Size
- sympathetic
Sympathetic Nervous System
- bilaterally
On Both Sides
A note on medical context
A glossary definition can explain a word, but it cannot tell you whether a symptom or test result is serious. If this term came from an article, use the full article and your clinician's guidance for context.