Probably just a case a frost nip. Be sure your hands are not turning white or blue this could be a sign of renards syndrome
A change in temperature changes the state.
Hemophilia is a recessive disorder that is carried on the X chromosome.
This is why is occurs more in males. In females both X's would have to carry the defect to inhert the disorder. Since males only have one X, they only need one to inhert the disorder