“Sometimes, particularly in older people, symptoms of shingles persist long after the rash is healed. In these cases, facial paralysis, headache, and persistent pain can be the aftermath. Possibly because the nerve cells conveying pain sensations are hardest hit, or are exquisitely sensitized by the virus attack, pain is the principal persistent complication of shingles. This pain, called postherpetic neuralgia, is among the most devastating known to mankind