Welcome to the Migraine and Headaches Forum! This forum is for questions and support regarding migraine and headache issues such as: abdominal
migraines, headaches caused by allergies, cluster headaches,
headaches, headaches in children, migraine headaches, sinus headaches, tension headaches, visual disturbances.
An occular migraine normally will not appear as a darkening of vision or black. When this happenes it can be more retinal then blood vessel related.
There is a possibility that you are suffering from a combination of ocular migraine and hemiplegic migraine. Both these type of migraines can occur without headache. Hemiplegic migraine causes weakness, numbness and tingling of one side of the body.
Do you have any family history of this type of migraine?
http://headaches.about.com/od/migrainediseas1/a/hemiplegic_mig.htm