Biology
Answer
| Sl. No. | Seasonal Allergy | Perennial Allergy |
|---|---|---|
| 1. | When the allergy occurs at a particular time of the year, it is called seasonal allergy. | It is not linked to any season. |
| 2. | Particular allergens prominently found in a season cause such allergy. | It occurs at anytime of the year. |
| 3. | For example: Hay Fever | For example: Dust Allergy |