Which condition is commonly associated with developmental delays in children?

Cystic fibrosis is a genetic disorder that affects the respiratory and digestive systems, leading to persistent lung infections and difficulties in breaking down and absorbing nutrients from food. The accumulation of thick mucus can cause respiratory complications, while inefficient digestion can result in malnutrition. This malnutrition, coupled with recurrent hospitalizations for respiratory illnesses, may hinder a child's overall development and lead to developmental delays.

In particular, the chronic illness often affects a child's ability to engage in play and physical activity, which are critical for social and motor skill development. Cognitive development can also be influenced by prolonged illness, frequent absences from school, and the psychological effects of managing a chronic condition from an early age.

While the other conditions listed can cause discomfort or health complications, they do not typically have as strong a direct impact on a child’s developmental milestones as cystic fibrosis does. For instance, asthma can influence physical activity levels, but most children with well-managed asthma can develop normally. Chronic constipation can cause discomfort and may affect social interactions, but it generally does not lead to long-standing developmental issues. Allergies, though potentially serious, mainly impact individual health rather than broader developmental trajectories.