Allergy is an immune system disorder, which results in extreme hypersensitivity. Read the article below to know how allergy is diagnosed.
It is absolutely necessary to understand the medical history of the patient to diagnose the type and form of allergy. The main technique to find this is through a questionnaire. The physician should also study the personality qualities of the patient. This will help in interpreting the medical history of the patient. To avoid misdiagnosis the physician should address the complaint of the patient rather than what the patient thinks he or she is allergic to.
The diagnosis should start from the main complaint of the patients that is what the symptoms are. All the symptoms are then listed and addressed according to the severity.
First, the history of the present illness should be obtained and the details of each complaint must be gathered. Even mild and trivial symptoms must be jotted down. The physician must also find out the cause, time of onset, the geographical location, the season, and the circumstance of the symptoms.
The allergy trait is inherited though not the specific sensitivity to a particular allergen. If parents and siblings are suffering from allergy then it can point towards allergy in the patient but it can be inaccurate too. The physician should know if there is any immunodeficiency disorders and cystic fibrosis disorder in the family.
The physical examination should be based on that of the patient’s complaints. It should also take into account various factors like the age of the patient. In adults, vital signs like height and weight must be taken into account. The physical examination should concentrate on the eyes, nose, sinuses, oropharynx, ears, neck, chest, heart, abdomen, and skin.
Skin testing is the best diagnostic tool in allergy. It can be used to confirm a particular allergen. Skin tests are used to determine the immediate hypersensitivity through IgE level and it is the best diagnostic technique to determine allergy. A positive skin test will reflect the presence of allergy. The number of skin tests to determine the allergy, varies according to the age of the patient and the allergens tested. Depending upon the situation the number of skin tests may vary from less than 20 to as many as 80. The various types of skin tests are:
More from iloveindia.com