Variable

Frequency

(%)

Grade (n = 50)

Low

High

17

33

34.0

66.0

Symptoms

Headache

Dizziness

Weakness

Seizures

Blindness

Loss of balance

Amnesia

Loss of consciousness

Incontinence

34

10

18

9

12

5

5

6

1

64.8

18.9

34.0

17.0

26.6

9.4

9.4

11.3

1.9

Affected site

Parietal

Frontal

Occipital

Posterior fossa

Temporal

Meninges

Thalamus

Corpus callosum

Cerebellum

17

18

3

5

9

1

3

1

4

27.9

29.5

4.9

8.2

14.8

1.6

4.9

1.6

6.6