Cranial neuropathies in sarcoidosis

Table 1 Frequencies of clinical signs and symptoms associated with neurosarcoidosis

Symptoms	%
Cranial nerve palsies	50-75
Overall parenchymal disease	50
Headache	30
Meningeal signs	10-20
Endocrinopathies	10-15
Hydrocephalus	10
Mass lesion(s)	5-10
Seizures	5-10
Encephalopathy/vasculopathy	5-10

Source: Stern et al[39].

Table 2 Frequencies of occurrence of cranial neuropathies in sarcoidosis

Cranial nerve	Frequency of occurrence
CN-I	Rare
CN-II	5% of all patients with sarcoidosis
CN-III, -IV, -VI	Rare
CN-V	Rare
CN-VII	25%-50% of all patients with sarcoidosis
CN-VIII	1%-7% of all patients with sarcoidosis
CN-IX, -X, -XI	Common
CN-XI	Rare
CN-XII	Rare

CN: Cranial nerve.