Cognitive psychology is primarily concerned with performing laboratory experiments and conducting scientific research, but this research has led to far-reaching applications within the field of psychology.
Abnormal uterine bleeding is any bleeding from the uterus (through your vagina) other than your normal monthly period. Having extremely heavy bleeding during your period can also be considered abnormal uterine bleeding. Very heavy bleeding during a period and/or bleeding that lasts more than 7 days is called menorrhagia (say: men-oh-raj-ee-ah).
Cancer is another cause of vaginal bleeding that is not related to menses â intermenstrual bleeding. It is, however, not a common cause of brown to black vaginal bleeding. An ulceration of the reproductive tract may cause bleeding and if the outflow is restricted or complicated with pelvic inflammatory disease (infection) then there may be a dark brown to black vaginal bleed usually presenting as spotting.