Iris is one of the very common ornamental plants in April producing beautiful flowers for a short duration. Iris flowers have been reported to be sensitizers related to skin reactions, contact dermatitis. Positive patch test reactions to iris flowers have been reported.
marked by pollen the
commonly associated with and
Pecan trees are producing the flowers in April; many individuals are allergic to pecan pollen. The trees are identified by its long sickle shaped leaves, with pointed tips. Pollen is associated with sinus symptoms – sneezing, blocked nose and post-nasal drip.
Allergy tests are available for diagnosis of pecan pollen induced allergic rhinitis and symptoms of airway reactivity such as asthma. Allergy tests are done using skin tests and blood tests for pecan pollen allergy.
Pine tree are starting to bloom in the Southern United States. In places where pine trees are plentiful, pine pollen could be a significant factor causing sinus allergy symptoms. The pine pollen is too large to enter the lower airway. Hence, a symptom of lower airway allergy such as asthma is usually not triggered by pine pollen allergy.
Hickory Trees are in bloom in April. If you are allergic to hickory pollen, symptoms such as sneezing, blocked nose, runny nose,and cough appears. Allergy symptoms due to pollen from Hickory tree are very common April in those areas where the trees are present such as southern United States. The tree carries lance-shaped leaves and small nuts. Some of you may be interested in learning more about Hickory-Pollen and the different variety of hickory trees in your area. Please follow the link.
Allergic sinus symptoms such as sneezing, watery eyes, blocked nose, post-nasal drip and cough are much more common in April compared to March. Tree pollen are the main cause of allergy symptoms in April.
Oak trees and pine trees started pollinating in March and continue to produce large quantities of pollen in air. Different types of pollinating oak tress include: Chapman Oak, Post Oak, Swamp Oak, Overcup Oak, Bur Oak, White Oak, Southern Red Oak, Turkey Oak, Black Oak, Northern Pin Oak, Scarlet Oak, Pin Oak, Bear Oak, etc., depending on which part of the country you live. Time of appearance of pollen in air can differ based the onset of warm weather. You develop symptoms of allergy to Oak Tree Pollen because of presence of an antibody called IgE antibody to Oak Tree Pollen, which is usually an inherited mechanism. When the pollen appears in air, and when you come into contact with them in the nose or the eyes, you release a chemical called histamine, which cause redness and itching of eyes.