aids aids dementia complex adenosine triphosphate adult t-cell leukemia amino acid amyotrophic lateral sclerosis analgesic andropause antioxidant astrovirus atrophy avian influenza bornholm disease brain carnitine cervical cancer chickenpox chronic fatigue syndrome cognition common cold coronavirus cowpox coxsackie b cytomegalovirus cytomegalovirus retinitis dna dna virus digital object identifier dysautonomia emedicine electrophysiology encephalitis lethargica enzyme exanthem fatty acid fifth disease foot-and-mouth disease gastroenteritis genital wart hiv hepatitis a hepatitis c hepatitis d hepatitis e herpes simplex herpes zoster herpesviridae hormone human t-lymphotropic virus human papillomavirus human parainfluenza viruses human respiratory syncytial virus hypothalamus icd infection infectious disease influenza lesion lumbar puncture lymphocytic choriomeningitis magnetic resonance imaging measles medical research council medical subject headings memory menopause metapneumovirus mitochondrial disease molluscum contagiosum monkeypox motor neuron mucous membrane mumps muscle muscle relaxant myelitis narcotic nerve growth factor nervous system neuroimaging neuron norovirus oncovirus pain pentose picornavirus plantar wart poliomyelitis poliovirus post-polio health international poxviridae progressive multifocal leukoencephalopathy quantitative rna rna virus rabies respiratory system reticular activating system retrovirus rhabdomyolysis ribose roseola rotavirus rubella senescence severe acute respiratory syndrome sexually transmitted disease skeletal muscle smallpox standing frame subacute sclerosing panencephalitis thalamus tick-borne meningoencephalitis tropical spastic paraparesis vaccinia viral hepatitis viral pneumonia viral skin disease virus wart wheelchair