Allergies often occur along with other problems, such as:

• Inflammation of sinuses (sinusitis).
• Ear problems (otitis media with effusion), especially in young children.
• Upper respiratory infections. Children have a higher incidence of upper respiratory infections, which make allergy symptoms worse.
• Wheezing, chest tightness, and coughing from allergic asthma.
• Sleep disturbances from a stuffy nose that requires mouth breathing.
• Nosebleeds from allergy symptoms or allergy medication.
• Skin infections from scratching itchy skin.
• Not being able to take needed medications because an allergy to the medication has developed.