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Acute Herpes Zoster Radiculopathy of the Lower Extremity With Dermatomal Rash and Lumbar Nerve Enhancement on MRI
Herpes zoster is a frequent cause of neuralgia and dermatomal vesicular rash secondary to reactivation of latent varicella zoster virus. However, it rarely presents with acute lumbar radiculopathy and the diagnosis can be quite challenging in such cases. Nerve signal abnormalities on magnetic resonance imaging are well recognized in herpes zoster neuropathy or plexopathy affecting the extremities, although gadolinium enhancement is characteristically absent. In this article, we describe a case of acute herpes zoster lumbosacral radiculopathy with characteristic vesicular dermatomal rash and second ever reported finding of gadolinium enhancement of the lumbar nerve on magnetic resonance imaging.
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