Exhaled Breath Condensate Biomarkers in CARAS

This study collects and analyzes exhaled breath condensate (the moisture you breathe out) to look for biological markers in people with combined allergic rhinitis and asthma syndrome (CARAS) — a condition where both the nose and lungs are inflamed due to allergies. Researchers want to find better ways to diagnose and monitor this condition. **You may be eligible if...** - You are between 18 and 80 years old - You have been diagnosed with allergic rhinitis, bronchial asthma, or the combined condition (CARAS) - You are willing to participate and have signed informed consent - You have not been in another clinical study within the past month **You may NOT be eligible if...** - You have other types of non-allergic rhinitis or nasal conditions - You are participating in another drug trial - You have serious systemic illness - You are pregnant or breastfeeding Talk to your doctor to see if this trial is right for you.