Im on holiday in san antonio Texas and I thought Id been bitten by mosquito on palm of my hand-this 'bite' has turned into pin prick blisters over my hands , my arms , behind my ear, neck, belly, chest, eye brow, bottom and private parts - it itches like hell and is hot- taking benadryl which seems to control itch but it still spreading. Please can you advise me as to what cream/medication Ican use - I fly home to UK on wednesday and am dreading the long flight home. Thankyou - sally hearn