The list below attempts to put symptoms in the order of importance but, it is difficult to say with certainty which symptoms are more common than others. There have been no formal or controlled studies of the percentages of patients that suffer from each symptom. In addition, symptoms may differ from patient to patient depending on where pressure is exerted (i.e. whether tonsillar descent is causing pressure on the brainstem or not, whether syrinx exists, etc).
In general, people without herniation may not suffer symptoms associated with brainstem compression but, rather, with lack of CSF flow and raised ICP. These symptoms tend to mirror those of PTC and include some of the ones listed below.
Headache (esp. if daily or at lower back of head)
Painful tension in neck
Fatigue
Migraines
Dizziness
Visual disturbances / loss of vision / spots in vision / double vision / seeing spots or "halos" / nystagmus
Tingling / numbness in the extremeties
General imbalance / clumsiness
Memory loss
Restricted movement
Intolerance to bright light / difficulty adjusting to light change
Vertigo from position change or sudden standing
Difficulty walking on uneven ground / feeling ground under feet
Poor / degraded motor skills
Difficulty driving
Difficulty negotiating steps
Pressure / pain in the neck
Pressure / pain behind the eyes (soreness in the eyeballs)
Back pain
Neck spasms
Insomnia
Ringing in ears (like the tone heard in a hearing test)
