Pregnancy is often the first thought when a period is missed, but there are many reasons for having a late period. This list is not all inclusive, and the causes are not presented in order of likelihood. The causes of this symptom can include unlikely diseases and medications. Furthermore, the causes may vary based on age and gender of the affected person, as well as on the specific characteristics of the symptom such as location, quality, time course, aggravating factors, relieving factors, and associated complaints. Use the Symptom Analysis option to explore the possible explanations for amenorrhea, occurring alone or in combination with other problems.
Treatment depends on the cause.
Consult your health car provider to help determine the cause. For amenorrhea caused by normal delay of menstruation onset, have patience until age 16. For a missed period caused by pregnancy , consult your obstetrician to confirm pregnancy. For a missed period caused by drastic weight loss or obesity , proper diet is recommended. For a missed period resulting from excessive exercise , use moderation and cut back to a more conservative program.