<unk>  may refer to: * Ascent<unk>  in which loss of consciousness occurs on ascent following a<unk>  breath-hold dive * Loss of consciousness associated with extreme nitrogen narcosis on<unk>  air dives.
Deep water blackout
Edema blister
Reinke's edema
Bloody show
Chancre
Harlequin color change
Rhagades
Berlin's edema