What symptom does eye allergy have

summary

There are many patients with eye allergy friends will encounter, can not be taken lightly, must be timely treatment. An eye allergy is an overreaction of the eye to a substance that is thought to harm it. Dust mites, for example, are harmless to most people, but they are like impact agents to people with allergies. The eyes secrete tears and mucus to try to wash them away. Seasonal allergic conjunctivitis (SAC) is probably the most common ocular allergy, often caused by pollen exposure and other environmental factors. The signs and symptoms of sac usually appear in spring and summer, and the severity varies with the amount of pollen. The incidence and severity of sac caused by seasonal pollen decreased significantly in the season with less pollen or relative lack of sunlight. Allergens such as dust, mold and animal fur can cause similar allergic reactions.

What symptom does eye allergy have

First, sac is mainly related to pollen allergy. PAC is common in people who are allergic to dust or perennial and seasonal allergens. The difference between sac and PAC is the duration of symptoms and the allergens associated with them. "Accurate history collection can help to identify the allergens involved.".

Second, the symptoms of sac usually begin in childhood and can last for a lifetime, although they may decrease with age. PAC usually begins in adulthood. Both can cause nasal congestion and asthma, but some people have only eye symptoms.

Third: the ophthalmologist will make a diagnosis based on symptoms, family history and personal history. Accurate collection of medical history can help to identify the relevant allergens. Your ophthalmologist may ask you to have a skin or blood test to get a detailed understanding of the severity and cause of the allergy.

matters needing attention

VKC is a relatively rare chronic ocular allergy, which can cause severe inflammation and visual complications. Most common in boys. Chronic inflammation and acute episodes of VKC can result from exposure to allergens, more commonly caused by wind, sunlight and dust. Typical symptoms of these patients are severe itching, tears and photophobia, as well as possible pain, redness and foreign body sensation in the eyes.