Symptoms|Treatments|Side effects|Causes
| cause | % of members (num votes) |
|---|---|
| Narrowing of the veins |
70% (61)
|
| Blood stays in the brain too long |
63% (57)
|
| Multiple Sclerosis |
59% (59)
|
| Environmental / Postural |
48% (60)
|
| Genetic |
38% (69)
|
| cervical spine injury |
50% (16)
|
| ehlers danlos |
6% (16)
|