Ocular MigraineThe exact source of
Ocular Migraines is not known, but many professionals contend it is
not an eye problem, but a change in the blood vessels in the brain.
This change may be triggered by a reaction to certain chemicals in
food as well as stress. Basilar Migraine
Basilar migraine (BM), also
known as Bickerstaff syndrome, consists of a headache accompanied by
dizziness, tinnitus (ringing in the ears), decreased hearing, nausea
and vomiting, loss of balance, the temporary sensation of tingling or
numbness of the skin "pins and needles." It is usually
felt in the extremities - the hands, arms, legs or feet, but can also
occur in other parts of the body, altered consciousness, and even
sometimes a loss of consciousness. Basilar migraine is common in
adolescent girls and young women.
(Ambrosini
A, D'Onofrio M, Grieco GS, et al: Familial basilar migraine neurology
2005 Dec 13; 65(11): 1826-8)
Hemiplegic Migraine
Hemiplegic
migraine is a very rare but well described form of migraine variant.
It was initially described as a type of migraine consisting of
recurrent headaches associated with temporary unilateral hemiparesis
or hemiplegia, the focal neurologic deficit may precede or accompany
the headache, other migraine symptoms may variably be present.
Patients may also experience disturbance of consciousness, and rarely
coma.
Menstrual Migraine
For some women, migraines occur
during the menstrual period. The actual cause of the trigger is
thought to be the fall of the level of the hormone estrogen. The
blood level of this hormone falls just before a period. It is not a
low level of estrogen that is the trigger, but the fall from one
level to another. If the migraine occurs only around periods, and not
at other times, this is a menstrual migraine. This form of migraine
occurs in about 1 in 7 women.
(Migraine organization (United
Kingdom), July 2006).
Visual Migraine
A visual migraine/hallucination can
be defined as a visual perception that is not associated with
external visual stimuli - thus, the individual has recurrent,
zigzagged auras that qualify as visual hallucinations just as well as
the geometric patterns experienced after a drug overdose, to name
only two of the many conditions under which such visual
hallucinations may occur.
(Heinrich Klüver's hallucinatory
form constants (December 22, 2004).
Vascular Migraine
Vascular
headaches are thought to involve abnormal function of the brain's
blood vessels or vascular system.
This
type of migraine is characterized by the following:
- Severe
pain on one or both sides of the head
- Nausea and/or vomiting
- Disturbed vision
- Intolerance to light
(University
of Virginia, Vascular Migraine, February 12, 2004).
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