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A 28-year-old male asked:

what is the definition or description of: arteriovenous malformation?

2 doctor answers2 doctors weighed in
Dr. Bennett Machanic
Neurology 52 years experience
Congenital abnormal: An avm is an abnormal collection of blood vessels secondary to maldevelopment, where veins and arteries are inappropriately connected. These can rupture and cause hemorrhage, can expand and compress nearby tissue. So, if in brain or spinal cord, could cause serious trouble.
Dr. Steven Busuttil
Vascular Surgery 33 years experience
Abnormal blood vesse: Is an abnormal connection and proliferation of the connection of arteries and veins.

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A 21-year-old member asked:

How is a chiari malformation diagnosed?

2 doctor answers6 doctors weighed in
Dr. Ario Kiarash
Orthopedic Surgery 27 years experience
Check NIH: Check nih's "nationalinstitute of neurological disorders and stroke": http://www.Ninds.Nih.Gov/disorders/chiari/detail_chiari.Htm all the facts you need are there.
A 27-year-old member asked:

What are the symptoms of chiari malformation?

1 doctor answer4 doctors weighed in
Dr. Edward Neilsen
Family Medicine 19 years experience
Sometimes nothing: Sometimes nothing, although seizures and headaches are possible. Depending on the severity weakness in the head and face, difficulty swallowing, dizziness, and nausea are also possible.
A 21-year-old member asked:

What should I do if I suspect I have chiari malformation?

1 doctor answer3 doctors weighed in
Dr. Kevin Teal
Neurosurgery 30 years experience
Get evaluated: Chiari malformation diagnosis requires a head and cervical MRI without contrast. In confirmed cases, a lumbar MRI can assess for a tethered spinal cord which may need to be released at some point. The most common symptom is headache but dizziness, balance problems, and tingling in arms/hands can also occur.
A 21-year-old member asked:

How do arteriovenous malformations damage the brain and spinal cord?

2 doctor answers4 doctors weighed in
Dr. Gregg Albers
Addiction Medicine 41 years experience
Hemorrhage: Most of the damage of an arteriovenous malformation occurs when the blood vessel or vessels are spontaneously ruptured and bleed into the brain, causing pressure and damage to the brain. The same can occur with an av malformation in the brain stem or spine.
A 20-year-old member asked:

What causes an avm to develop in the fetus?

2 doctor answers5 doctors weighed in
Dr. Robert Singer
Neurosurgery 29 years experience
Depends: There are a variety of mechanisms that lead to vascular malformations. Some are related to familial predispositions while other are purely sporadic errors in the process of development.

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Last updated Jan 27, 2013

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