What is the definition or description of: complex migraine?

Complex symptoms. We generally think of migraines as headaches. Headache is just the most common feature in most people. Migraines are a complex neurologic dysfunction. They are most similar to seizures. If you ignore the headache part of it: people have multiple symptoms including nausea, difficulties with speech, ambulation, dealing with bright lights or loud sounds, etc. Other symptoms or individual.
Miserable. Miserable head pain, often debilitating, but possibly including weakness, loss of vision or difficulty speaking. Can be mistaken for a stroke.
See below. A "complex migraine" is one in which there are neurological symptoms such as weakness, loss of vision, or difficulty speaking in addition to the headache. In fact, a complex migraine may be mistaken for a stroke.