12-year-old girl, why isn't she growing, what illness is it exactly

Patient's question:

No

Doctor's answer:

The growth of a child mainly occurs in three stages:
First stage: 0~7 years old. During this stage, the height increase has a significant impact of up to 50% on adult height. If a child's height falls below the standard for their age at 7 and is not intervened upon in time, allowing natural growth, their adult height will also be lower than that of their peers.
Second stage: 7~12 years old. The height increase has an impact of 30% on adult height.
Third stage: From 12~18 years old, the impact is reduced to 20%.
During puberty, sex hormones significantly affect height because puberty is the second peak growth period. Afterward, the epiphyseal plates close, and growth ceases.