Assertion: seasonal allergy | /r/AtLocation | perennial nature
Facets:
value: depending on the type of allergen
type: OTHER
Source sentences:
text: In contrast seasonal allergies usually last several weeks to months, when triggered by seasonal pollens or can be present in a more perennial nature depending on the type of allergen (e.g. dust mites or your pets at home) and duration of allergen exposure,” he adds.