Normally parts which are bruised turn black. You probably jammed your thumb somewhere. It is the blood inthe bruised tissue that makes it look black.
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∙ 2007-05-14 11:28:06thumb just turned black. what is the cause of this problem?
Oxidation of the filament (tungsten)
Excess fuel causes black smoke.
Only Nelson Mandela can answer this question definitively. However it seems unlikely that, given his life of sacrafice and fighting for black causes, he would reverse his course now.
swelling is a sign of inflammation which accompanies and in some cases causes arthritis.
thumb just turned black. what is the cause of this problem?
a black kisses them, and they turn black.
it will turn black if you damage it, or your toenail died
Starch.
Rusting
Mold
Gravitation.
Frost bite? Poor circulation?
usually a vitamin c deficiency
Brake dust!
Oxidation of the filament (tungsten)
PPP causes large pustules to form at the base of the thumb or on the sides of the heel. In time, the pustules turn brown and peel.