What cause abnormally small stature normal proportions?

Abnormally small stature with normal proportions is often caused by genetic factors, such as dwarfism, particularly conditions like achondroplasia. Other potential causes include hormonal imbalances, such as growth hormone deficiency, and chronic health issues that affect growth. In many cases, the exact cause may remain unidentified. Overall, it reflects a variation in growth patterns rather than a proportionate deficiency.