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A member asked:
What could cause an irregular monthly period? thanks
15 doctors weighed in across 3 answers
Many things.: Not ovulating during every cycle can cause irregular periods. This is is common in teens as their systems mature, but may also occur in adults. Excessive exercise, stress & eating disorders can also throw periods off, as well as polycystic ovarian syndrome, ovarian or adrenal tumors, thyroid dysfunction, or too much prolactin. Spotting between periods is commonly caused by infection.
Answered 10/27/2013
6.1k views
It varies: Many things can cause irregular menses such as excessive exercise, stress, eating disorders and hormone imbalances. The most common hormone imbalance is polycystic ovarian syndrome, but ovarian or adrenal tumors, thyroid dysfunction, or too much prolactin can also cause irregular periods.
Answered 10/27/2013
6k views
Medications: I see this frequently amongst patients taking antidepressant and antipsychotic medications due to the effect on Dopamine and prolactin.
Answered 2/17/2015
5.9k views
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