The diagnostic approach to easy bruising or a suspected mild bleeding
disorder includes a careful history and physical examination as well a
s laboratory investigations, The history should determine whether or n
ot a bleeding disorder exists and help elucidate possible causes. The
physical examination should evaluate evidence of bleeding and identify
systemic illness. The laboratory investigation should include both sc
reening and more specific diagnostic tests depending on the results of
the screening tests and clinical findings. The review will provide a
framework for generating a differential diagnosis in patients with sus
pected bleeding disorders and will categorize them into abnormalities
of coagulation factors, platelets and those related to blood vessels a
nd supporting tissues.