Timothy grass

Timothy grass is one of the most common grass species, and its pollen is a frequent cause of seasonal allergies (hay fever). Major allergens (Phl p 1, Phl p 5, etc.) have high allergenic activity and can trigger significant reactions. The pollination period typically occurs in late spring and summer. Cross-reactivity with other grasses is common.

Indications
Suspected allergy to timothy grass pollen in the presence of the following symptoms during pollen season:

• nasal congestion, sneezing, runny nose
• itching of the nose, throat, or eyes
• watery, red eyes (allergic conjunctivitis)
• cough, difficulty breathing
• exacerbation of bronchial asthma
• seasonal pattern of symptoms (spring–summer)

Procedure
Specific IgE to timothy grass allergens is determined through a blood test:

• venous blood sample collection
• analysis using immunoassay methods
• component-resolved diagnostics may be included (e.g., Phl p 1, Phl p 5)
  The procedure takes a few minutes, and results are usually available within a few days.