OAS meaning in Medical ?

Answer:

What is Oral allergy syndrome mean?

Oral allergy syndrome (OAS) is a type of food allergy classified by a cluster of allergic reactions in the mouth and throat in response to eating certain (usually fresh) fruits, nuts, and vegetables that typically develops in adults with hay fever.

OAS is not a separate food allergy, but rather represents cross-reactivity between distant remnants of tree or weed pollenstill found in certain fruits and vegetables. Therefore, OAS is only seen in people with seasonal pollen allergies, and mostly people who are allergic to tree pollen. It is usually limited to ingestion of uncooked fruits or vegetables.

Another term used for this syndrome is pollen-food allergy. In adults up to 60% of all food allergic reactions are due to cross-reactions between foods and inhalative allergens.

OAS is a Type 1 or IgE-mediated hypersensitivity, which is sometimes called a "true allergy". The body's immune system produces IgE antibodies against pollen; in OAS, these antibodies also bind to (or cross-react with) other structurally similar proteins found in botanically related plants.

OAS can occur any time of the year but is most prevalent during the pollen season. Individuals with OAS usually develop symptoms within minutes of eating the food.

reference

Full Form	Category
Occupational Advice Service	Academic & Science
Oklahoma Academy of Science	Academic & Science
Ohio Academy of Science	Academic & Science
Ophthalmic Anesthesia Society	Academic & Science
Online Assessment System	Academic & Science
Overpayments and Accounting Summary	Accounts and Finance
Occupational Wages structure	Business
Office Administrative Secretary	Business
Office of Audit Services	Business
Oshikai Advertising Services	Business
Optimum Additive Solution	Chemistry
On American Soil: How Justice Became a Casualty of World War II	Community
Olympic Archery in Schools	Community
Operation Animal Shelter	Community
Open Alternative School	Community
Organization of American States	Computer and Networking
Oracle Advanced Security	Computing
Open Application Server	Computing
Online Auction Site	Computing
On Access Scanner	Computing
Object Addressable Storage	Computing
Orbiter Avionics Software	Computing
Office Automation Systems	Computing
One Angry Swede	General
Office of Aviation Services's	General
Office of Aviation Services	General
Organisation armée secrète	General
Organization of Arab States	General
Objective Advantage Scope	General
Ordinary Attire Studio	General
Office of Addiction Services	General
Online Admission System	General
Occupational Assessment Services	General
Oakland Animal Services	General
Oil Activity Surface	General
Ola's Auto Services	General
Oman Auto Show	General
Isuzu Oasis	General
Option Adjust Spread	General
Office of Administrative Services	General
Online Assisted Support	General
Other American States	General
Option Adjusted Spreads	General
Oneonta Auxiliary Services	General
Obstacle Assessment Surface	General
Odisha Administrative Service	General
Office of Applied Studies	Governmental
Organisation de l’Armée Secrète	Governmental
Orissa Administative Service	Governmental
Offshore Access System	Governmental
Old Age Security	Governmental
Office of Aircraft Services	Governmental
Online Application System	Internet
Oral allergy syndrome	Medical
On Active Service	Military and Defence
Operations Automation System	Military and Defence
Offensive Air Support	Military and Defence
Oracle Application Server	Networking
Organization of African States	Regional
Organization of Agreement States	Regional
Organisation of American States	Regional
Office Administration System	Softwares
Office Automation System	Space Science
Orbiter Aeroflight Simulator	Space Science
Orbiter Atmospheric Simulator	Space Science
Orbiter Avionics System	Space Science
Oregon Adaptive Sports	Sports
Option Adjusted Spread	Stock Exchange