What causes irregular periods?

Hormonal imbalance. Irregular periods are caused when your body's signals for ovulation and menstruation get confused by hormonal imbalances that can be related to your thyroid (TSH), pituitary (LH/FSH/prolactin), ovaries (estrogen/progesterone). Many external factors can affect the hormones: malnutrition, stress, obesity, for example. Hormonal contraception can help to regulate your periods, which is healthier.
Irregular ovulation. Ovulation is necessary to have normal spontaneous menstrual periods. After ovulation the hormone Progesterone rises; if no pregnancy occurs, Progesterone falls and a period begins. In anovulation there is no Progesterone rise: menstruation cannot occur, so periods are irregular or absent altogether.

Related Questions

What causes irregular periods?

Thyroid problem. Pt with thyroid problem may have irregular periods. You need to seee a doctor to get evaluate the problem for proper treatment. Read more...
Hormonal imbalance. Irregular periods are caused when your body's signals for ovulation and menstruation get confused by hormonal imbalances that can be related to your thyroid (TSH), pituitary (LH/FSH/prolactin), ovaries (estrogen/progesterone). Many external factors can affect the hormones: malnutrition, stress, obesity, for example. Hormonal contraception can help to regulate your periods, which is healthier. Read more...

What cause irregular periods 8 months after ovary removal?

Hormonal imbalance. Most common cause can be hormonal imbalance, but other causes including pregnancy needs to be ruled out as well. Read more...

What can cause irregular periods?

Many causes. Here is a website that lists the causes of irregular periods: http://www.webmd.com/women/tc/missed-or-irregular-periods-topic-overview. Read more...
Many reasons. Irregular periods are caused when your body's signals for ovulation and menstruation get confused by hormonal imbalances that can be related to your thyroid (TSH), pituitary (LH/FSH/prolactin), ovaries (estrogen/progesterone). Many external factors can affect the hormones: malnutrition, stress, obesity, for example. Hormonal contraception can help to regulate your periods, which is healthier. Read more...

What could cause irregular periods?

Many reasons. Irregular periods are caused when your body's signals for ovulation and menstruation get confused by hormonal imbalances that can be related to your thyroid (TSH), pituitary (LH/FSH/prolactin), ovaries (estrogen/progesterone). Many external factors can affect the hormones: malnutrition, stress, obesity, for example. Hormonal contraception can help to regulate your periods, which is healthier. Read more...

What could cause irregular periods and appetite suppression?

Likely not related. Irregular periods mean you don't ovulate reliably or regularly; if you have spontaneous periods you are ovulating sometimes. Any doctor who works with reproductive age women should be able to help you sort your cycles out better! appetite/suppression has a loose association only with menstrual cyclicity. Read more...

Why do I have irregular periods and not preggo. What cause these irregular periods?

Irregular periods . Irregular periods are one of the most common problems obgyns treat. If this is one time problem it usually resolves on its own. If this is a recurring problem you should be evaluated. Infections & hormonal changes can cause spotting. If there is a concern for pregnancy then do a home pregnancy test . There are many options available to help regulate the menstrual cycle. Schedule a visit. Read more...