Common allergies include nose allergy like rhinitis, sinusitis, skin rash, itching, bronchitis, asthma.. You can get allergic reactions from airborne pollens, insects, rice dust, wheat dust, house dust, fungal spores and may be from food like nuts, chips, toffees, chocolate, preservative items, etc. It causes frequent and long duration cough, nasal congestion, skin rash, itching, breathing difficulty and sputum production. This can occur either on change of season or all throughout the years.