In-depth

Acute sinusitis

Alcohol intolerance

Allergies

Aspergillosis

Broken nose

Bronchiolitis

Chronic cough

Chronic daily headaches

Chronic sinusitis

Cluster headache

Common cold

Common cold in babies

Cystic fibrosis

Drug addiction

Dust mite allergy

Dust mite allergy, an immune system reaction to inhaled dust mite "debris," causes hay fever symptoms and may cause allergy-induced asthma.

Food allergy

Food allergy symptoms can make you miserable. Unfortunately, there's no cure — but there are steps you can take to keep your symptoms in check.

Group B strep disease

Headaches in children

Humidifiers

Influenza (flu)

Nasopharyngeal carcinoma

Nonallergic rhinitis

Pet allergy

Rebound headaches

Respiratory syncytial virus (RSV)

Rubella

Shellfish allergy

Sinus headaches

Wheat allergy

Whooping cough

Feb. 26, 2016