There may be a history of asthma on either the mother’s or father’s side of the family. Often a parent or sibling has an allergic condition. The tendency to have asthma is, therefore, passed from one generation to the next and close family members with asthma are an important risk factor for children to develop the condition.
Children with asthma usually have a family history of allergies.
A high risk of allergic conditions is inherited as an autosomal dominant with variable inheritance.