Board relevant discussion on childhood viral exanthems. VZV can infect a myriad of neurons both in the CNS and PNS, however for dorsal root ganglion latency the epidermal nerves are relevant. HSV is the leading viral cause of blindness not VZV, which is what my professor actually said, and what a quick search of literature confirmed. Measles causes photophobia by infection of retina and optic nerve. Hydrops fetalis associated with Parvovirus B19 can cause polyhydraminios making club-foot unlikely to occur.