An idiopathic spasm of arterioles in the digits is termed:
a. arteriosclerosis obliterans.
b. giant cell arteritis.
c. Raynaud disease.
d. a peripheral arterial aneurysm.
C
Raynaud disease is idiopathic, intermittent spasm of the arterioles in the digits, which causes skin pallor. Arteriosclerosis obliterans is occlusion of the blood supply to the extremities by atheros-clerotic plaques. Giant cell arteritis is a generalized inflammatory disease that affects the carotid, temporal, and occipital arteries. An aneurysm is dilation of an artery caused by a weakness in the arterial wall. Aneurysms occur in the aorta, renal, femoral, and popliteal arteries.
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