The GP will ask about a history of your symptoms (wheezing, tight chest, coughing), when your symptoms started, and determine any triggers and related conditions (eczema and hay fever).
What are the investigations?
This is a machine that you blow into which can measure the speed you can blow out, and also how much lung capacity you have.
This machine is usually used to take a measurement before you use your blue (reliever) inhalers, and another measurement after you use your blue inhaler.
We then compare the results to see if there has been an improvement in your readings with the inhaler. If there is a significant reversable result with the inhalers, then it makes it more likely you have asthma.
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