Symptoms: * With resolution of the herpes zoster eruption, pain that continues for three months or more is defined as<unk> . * Pain is variable, from discomfort to very severe, and may be described as burning, stabbing, or gnawing. Signs: * Area of previous herpes zoster may show evidence of cutaneous scarring. * Sensation may be altered over the areas involved, in the form of either hypersensitivity or decreased sensation. * In rare cases, the patient might also experience muscle weakness, tremor, or paralysis if the nerves involved also control muscle movement.
Postherpetic neuralgia
Trigeminal neuralgia
Atypical trigeminal neuralgia
Occipital neuralgia
Erythromelalgia
Morning sickness
Cold-stimulus headache
Cerebritis