What causes irregular periods?

Infrequent, irregular or absent periods are all common variations, many finding their periods particularly heavy when they do arrive.


The period disturbance may be a sign that there is a problem with regular monthly ovulation.


Many teenagers use the contraceptive pill to control their periods as irregularity or heaviness is a common complaint at this time, even in the absence of Polycystic Ovary Symptoms.


This often leads to a delay in the diagnosis of PCOS, many not presenting until the pill is stopped and then finding periods cease or become irregular.