How Long Do Allergies Last?
Allergy symptoms can persist for varying lengths of time, depending on several factors including the type of allergen and individual sensitivity.
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Seasonal Allergies: These typically last for several weeks, coinciding with the pollen season of the specific plant causing the reaction (e.g., trees in spring, grasses in summer, weeds in fall). However, prolonged rainy periods can extend the season and symptom duration well into the fall due to increased mold growth. [Source: ACAAI Public Website, Mayo Clinic]
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Other Allergies: For allergies not related to seasonal pollen, symptoms may last for weeks or even months if exposure to the allergen continues. Once exposure ends, symptoms usually subside. [Source: Cleveland Clinic]
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Specific Allergy Types: The duration varies even within allergy types:
- Food allergies: While some, like cow's milk allergy, may be outgrown, others persist for life. Oral allergy syndrome (OAS) symptoms are generally short-lived. [Source: Seattle Children's]
- Rhinitis (hay fever): Symptoms can last for weeks to months with ongoing allergen exposure. [Source: AAFA]
- Allergic Reactions: The duration of an acute allergic reaction depends on the trigger and the severity of the reaction. Skin and breathing symptoms can resolve within hours to days. [Source: Verywell Health]
Distinguishing Allergies from Colds
It's crucial to differentiate between allergies and a common cold. Colds usually resolve within 3-14 days, while allergies can last significantly longer. Allergies often present with itchy, watery eyes, a symptom not typically associated with a cold. [Sources: Mayo Clinic Health System, NIH News in Health]
Treatment and Management
Effective management involves avoiding allergens whenever possible. Treatments such as nasal saline rinses, antihistamines, and nasal steroid sprays can help alleviate symptoms. [Sources: Mayo Clinic, Mayo Clinic Health System]
