The patient who has been taking isoniazid (INH) for 2 months complains about numbness, par-esthesias, and tingling in the extremities. Which of the following interpretations of these symp-toms is appropriate for this patient?
a. The patient is experiencing hypercalcemia.
b. The patient is experiencing peripheral neuritis.
c. The patient is experiencing small blood vessel spasm.
d. The patient is experiencing impaired arterial circulation.
ANS: B
A common side effect of INH is peripheral neuritis. Signs and symptoms include numbness, par-esthesias, and tingling in the extremities.
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