In reply to Reach>Talent:
Yup, got bitten by one in Italy last summer. Started out as a wee red lump, after 24 hours area around bite was burning hot, bright red and the skin totally solid (now about 18 by 8cm) with red lines radiating from the red bits.
Trip to Cortina minor injuries, hydrocortisone drip in arm, steroid injection in backside, antibiotic & steroid cream on bite and bandaged arm. To top it all antibiotics for 7 days that made me very ill.
Post edited at 17:29