Treatment
Most times, no treatment is necessary, however, if you are experiencing problems, such as heavy bleeding, that is interfering with your daily life, your doctor can talk with you about possible medical treatment, such as hormonal contraceptives which contain estrogen and progesterone and can help regulate your period.
Other treatments would include those to address the underlying cause, such as stress relief techniques or eating a balanced diet. In most cases, once the underlying cause is treated, your cycle will regulate itself.
References:
"Irregular Periods," Date Unknown, Staff Writer, University of California Student Health Services
"Irregular Periods (Oligomenorrhea)," Date Unknown, Staff Writer, Epigee Women's Health
"What Are Irregular Periods?" 2010, Feb 9, Christian Nordqvist, Medical News Today

8 Sexual Health Symptoms Women Shouldn’t Ignore
Ten Myths About Emergency Contraception
10 Little Known Facts About Your Baby
What Your Doctor Needs to Know About Your Sex Life