Vygotsky's social account of psychology is comprehensible when viewed in relation to his political views and his early work experience. A brief discussion of this context is therefore in order before explaining the details of his psychological stand- point.
1 Central cyanosis and its causes are all associated with peripheral cyanosis. 2  Decreased pumping of blood by the heart or reduced cardiac output. 3  This is seen in heart failure or circulatory shock. 4  Diseases of circulation like thrombosis or embolism. 5  Constriction of blood vessels of the limbs, fingers and toes.
There are various causes for peripheral edema, including: 1  Injury or trauma, such as a sprain or fractured bone. 2  Being overweight. 3  Aging. Pregnancy.  Consuming too much 1  salt. Consuming too much alcohol.  Menstruation and/ 1 or PMS. Sitting or standing in one position for a long period of  time.