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  • Title: Neurologic problems of the lower extremity associated with HIV and AIDS.
    Author: Gilmer WS.
    Journal: Clin Podiatr Med Surg; 1998 Apr; 15(2):281-303. PubMed ID: 9576054.
    Abstract:
    Lower extremity symptoms are caused by lesions at any level of the neuraxis, from cortex to muscle. HIV affects virtually every level of the nervous system, either directly or indirectly. The presence of pathology at multiple levels and by multiple processes further complicates the bedside diagnosis of a patient with AIDS and neurologic symptoms. Many neuropathies and other conditions that affect the lower extremities can be identified with careful history and physical examination, confirmed with limited testing, and can be treated successfully. Distal symmetric polyneuropathy is the most common lower extremity disorder, but it must be distinguished from similar-appearing neuropathies caused by medications, B12 deficiency, or vasculitis. Diffuse infiltrative lymphocytosis syndrome also causes a painful peripheral neuropathy that must be distinguished from distal symmetric polyneuropathy. Inflammatory demyelinating polyneuropathies are characterized by muscle weakness. They occur in early, asymptomatic HIV infection and respond to plasmapheresis or steroids. Mononeuropathies in patients with CD4 counts more than 200 often resolve on their own. Multiple mononeuropathies, which occur in patients with CD4 counts less than 50, are often associated with cytomegalovirus infection and may follow a rapidly progressive course unless treated promptly and aggressively. Progressive polyradiculopathy occurs late in the course of AIDS, is often caused by cytomegalovirus, is rapidly progressive, and generally is fatal unless recognized and treated promptly. Muscle weakness, myalgia, and fatigue are common in HIV and have multiple causes. Lower extremity spasticity may be caused by treatable etiologies such as spinal cord abscess, tumor, disc compression, B12 deficiency, or ischemia. Gait disturbances are common but nonspecific and may be caused by treatable neurologic disorders at any level of the neuraxis.
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