Palpating Masseter Muscles

See Table 5-9, Pupillary Abnormalities (p. 181).

See Table 5-10, Deviations of the Eyes (p. 182).

See Table 16-9, Nystagmus (pp. 610-611).

Ptosis in 3rd nerve palsy, Horner's syndrome (ptosis, meiosis, anhidrosis), myasthenia gravis

Weak or absent contraction of the temporal and masseter muscles on one side suggests a lesion of CN V. Bilateral weakness may result from peripheral or central involvement. When the patient has no teeth, this test may be difficult to interpret.

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