Where is the scotoma located?
Every normal mammalian eye has a scotoma in its field of vision, usually termed its blind spot. This is a location with no photoreceptor cells, where the retinal ganglion cell axons that compose the optic nerve exit the retina. This location is called the optic disc….
| Scotoma | |
|---|---|
| Specialty | Ophthalmology |
What does scintillating scotoma look like?
Scintillating scotomas may look wavy or alternate growing from dark to light again. The edges of the spot you see are often jagged. Headache pain may occur along with scintillating scotomas, or you may feel no pain at all.
Is scintillating scotoma common?
About one-third to one-half of all migraine patients experience an aura, or prodrome. A visual pattern such as a scintillating scotoma is by far the most common prodrome, although the prodrome may also be somatosensory, such as an enhanced scent ability.
Where is an ocular headache?
They usually start on one side of the head. The symptoms get worse when you start doing strenuous activity. Ocular migraines are a rare condition that can be defined as a headache followed by vision changes. You may see lines, shimmering lights, stars, or at times blind spots.
What causes scotoma migraine?
Causes. Scintillating scotomas are most commonly caused by cortical spreading depression, a pattern of changes in the behavior of nerves in the brain during a migraine. Migraines, in turn, may be caused by genetic influences and hormones.
What can cause a scotoma?
A scotoma can be develop as a result of a number of different, even serious, conditions:
- Retinal detachmen.
- Diabetic retinopathy.
- Macular degeneration.
- Glaucoma.
- High blood pressure.
- Stroke or transient ischemic attack (TIA)
- Head injury.
- Brain tumor.
Can ocular migraines cause high blood pressure?
The relationship between migraine and high blood pressure is complex but real. Recurring migraine attacks can be a sign that you have high blood pressure, also called hypertension, but migraine disease can also put you at a higher risk of developing high blood pressure.
Is scintillating scotoma an ocular migraine?
Scintillating scotoma is a common visual aura that was first described by 19th-century physician Hubert Airy (1838–1903). Originating from the brain, it may precede a migraine headache, but can also occur acephalgically (without headache)….
| Scintillating scotoma | |
|---|---|
| Prognosis | Self-limiting |