What Is a Fever Blister?
9. Diagnosis
Fever blisters are a very well-known condition and your doctor is likely to be able to make a diagnosis just by looking at the sores. However, your doctor might wish to confirm the diagnosis in some cases. This will typically mean taking samples from the blisters to be sent to a lab for further examination.
Experts will be able to confirm the diagnosis by looking for signs of the virus in the samples. This is sometimes necessary if the patient is particularly vulnerable to disease and the doctor needs to be sure the patient is as safe as possible. The patient may also need to be tested for any complications that might have been caused by the disease.
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