text: Competent venous valves, intermittent leg muscle contraction and respiration is required to support normal venous blood return. When these fail, venous insufficiency and<unk>  occur.<unk>  is caused by an accumulation of an excessive amount of watery fluid in the serous cavities, tissues or cells causing painless, non-reddened swelling.
option_0: Pedal edema
option_1: Palmar erythema
option_2: Wrist drop
option_3: Flat feet
option_4: Tripe palms
option_5: Rocker bottom foot
option_6: Brachydactyly
option_7: Dactyly