Which symptom is not commonly associated with congenital adrenal hyperplasia?

Congenital adrenal hyperplasia (CAH) is a group of inherited disorders affecting the adrenal glands, leading to an imbalance in sex hormone production, particularly androgens. This condition commonly presents with various symptoms due to the excess production of these hormones.

Weight gain is not typically associated with CAH as a direct symptom. While patients with CAH may experience related body changes due to hormone imbalances, the characteristic features of the disorder primarily involve early virilization and other signs derived from elevated androgen levels.

In contrast, symptoms such as polycystic ovaries, menstrual irregularity, and deepening of the voice are more directly linked to the hormonal disruptions caused by CAH. Polycystic ovaries can occur due to excess androgens affecting ovarian function. Menstrual irregularities result from a combination of hormonal imbalances, which can disrupt the normal menstrual cycle. The deepening of the voice, particularly noted in females, is a result of androgen exposure leading to changes in vocal cord structure.

Therefore, in the context of this question, weight gain does not align with the hallmark features typically observed in congenital adrenal hyperplasia, making it the symptom that is not commonly associated with this condition.