HOUSTON, Texas -- Doctors tell us they've seen an increase recently in patients wondering if the Saharan dust is what's causing their worsening allergy symptoms.

"To some degree, if the dust is heavy enough, everyone would feel it. But patients with asthma, severe asthma or uncontrolled asthma, they're going to be particularly susceptible to symptoms," Allergy and Immunology Specialist Dr. David Engler said.

Who will be impacted the most? Doctors say the very young and senior citizens are most vulnerable, along with anyone with moderate to severe asthma.

Symptoms include wheezing, tightness in the chest, coughing, and shortness of breath.