Asthma Associated Conditions Make an Appointment Refer a Patient Ask a Question Reviewed by David Tinkelman, MD (April 01, 2012) Pregnancy and Hormonal Changes Some women with asthma have increased symptoms at a particular time during their menstrual cycle, such as pre-menstruation, or during pregnancy. This worsening results from a change in the balance of hormones that is occurring at that time. Your healthcare provider may adjust asthma medications during that time to reduce your symptoms. Read more about asthma and pregnancy. Gastroesophageal Reflux Gastroesophageal reflux, or GERD, occurs when the acidic contents of the stomach flow back up into the esophagus. This stimulates a reflex that may cause asthma to worsen. Symptoms of heartburn and breathing difficulty at night can indicate GERD. Vocal Cord Dysfunction Vocal Cord Dysfunction may be mistaken for asthma. Learn what happens with Vocal Cord Dysfunction, how VCD is diagnosed, what triggers VCD symptoms, and how VCD is treated in Vocal Cord Dysfunction. Chicken Pox Vaccine Chickenpox (varicella) is one of the most common childhood viral diseases. Chickenpox is highly contagious and can now be prevented with a safe and effective vaccine. Asthma Diagnosis Asthma Triggers Clinical Trials For more than 100 years, National Jewish Health has been committed to finding new treatments and cures for diseases. Search our clinical trials.