Why is my period late?

Patient's question:

No

Doctor's answer:

There are two major categories of factors affecting menstruation:
1. Disorders of the nervous-endocrine function: such as excessive mental stress, changes in environment and climate, malnutrition or metabolic disorders, and influences from gynecological inflammatory diseases, primarily due to defects in the hypothalamic-pituitary-ovarian axis, which is known as menstrual disorders.
2. Organic lesions or drug-induced causes: including local inflammation of the reproductive organs, tumors, developmental abnormalities, and malnutrition.