Rickets is a growth disorder observed in children. It typically results from a prolonged and severe deficiency of vitamin D, calcium, or phosphate. These deficiencies lead to the softening and weakening of bones, causing skeletal deformities. Rarely, genetic factors can also play a role in the development of rickets.

Vitamin D is critical for the body's absorption of calcium and phosphorus from food. Without sufficient vitamin D, maintaining healthy calcium and phosphorus levels in the bones becomes difficult. This condition causes children's bone structures to weaken and become fragile.

Rickets is distinguished from osteomalacia, a similar condition in adults, because it only affects children. Treatment usually involves vitamin D and calcium supplements. However, if there is an underlying cause, additional medication may be required.