What are clear signs u have shingles?

Shingles: or herpes zoster is due to reactivation of the varicella zoster virus established in sensory ganglia following an attack of chicken pox. The resultant inflammation spreads to the peripheral nerve and eventually reaches the skin where it erupts as a rash and extreme pain.

Pain, burning or: tingling with subsequent eruption of blisters on red base in a dermatomal distribution that spreads typically on one side of the body. but see dermatologist for early treatment as postherpetic neuralgia or pain following the viral eruption can be reduced with early treatment