<unk>  is a skin condition that may result from mechanical obstruction to circulation, with resulting stress on the small vessels leading to purpura.
Obstructive purpura
Solar purpura
Drug-induced purpura
Amyloid purpura
Nonthrombocytopenic purpura
Phlebothrombosis
Venom-induced consumption coagulopathy
Thrombocytopenic purpura