For most people, itching is little more than a temporary annoyance.
A mosquito bite causes it. Dry winter air can trigger it. A new soap, a change in laundry detergent, or seasonal allergies can all leave the skin irritated for a few days before things return to normal.
That is exactly what one middle-aged man believed was happening when he first noticed a persistent itch spreading across his body.
At first, there seemed to be no reason to worryRead more below.