N91.0

Clinical Causes: Genetic conditions such as Turner syndrome or Androgen insensitivity syndrome Congenital abnormalities of the reproductive tract Hormonal imbalances involving the hypothalamus, pituitary gland, or ovaries Problems with the development of the ovaries (e.g., gonadal dysgenesis) Structural abnormalities of the uterus or vagina Chronic illnesses or nutritional deficiencies affecting development Stress, excessive exercise, or significant weight loss impacting hormonal levels Certain medications or treatments interfering with hormonal activity

Key Symptoms: Absence of menstrual periods by age 15 or 13 without the onset of menstruation Delayed onset of secondary sexual characteristics such as breast development or pubic hair Normal growth patterns and height for age in some cases Possible delayed or absent development of ovaries or reproductive organs Symptoms related to underlying conditions, such as webbed neck or cardiovascular issues in genetic syndromes

Diagnosis Path: Diagnosis involves a comprehensive medical assessment including a detailed medical history, physical examination, and various diagnostic tests. These may include hormone level testing, imaging studies such as ultrasound or MRI to examine reproductive organs, and genetic testing if a syndrome is suspected. The goal is to determine whether primary amenorrhea is due to structural anomalies, hormonal deficiencies, or genetic factors, enabling targeted treatment planning.

Treatment Protocols: Treatment depends on the underlying cause identified during diagnosis. Approaches may include hormone therapy to induce menstruation or develop secondary sexual characteristics, surgical interventions to correct anatomical abnormalities, or management of genetic or chromosomal conditions. Psychological support and counseling are often recommended to address emotional concerns related to reproductive health and development.