DUB (dysfunctional uterine bleeding) is characterized by abnormal uterine bleeding without identifiable organic, systemic, or iatrogenic causes. It can occur with or without ovulation and is categorized into two types: ovular bleeding and anovular bleeding.

23. DUB is defined as a state of
abnormal uterine bleeding
without any clinically detectable
organic, systemic, and iatrogenic
cause.
The abnormal bleeding may be
associated with or without
ovulation and accordingly
grouped into:
•Ovular bleeding
•Anovular bleeding