Analyze the cause of your skin infections, your doctor will first perform a physical exam and take your medical history. Many cases of skin infections caused by an infection can be analyzed by an examination of the rash.
While taking your history, your doctor may also ask if you noticed the infections following eating a particular food, taking a certain medication, or coming into direct contact with a particular thing.
Your doctor may also perform some routine blood tests, such as a basic metabolic panel or complete blood count in order to rule out a specific disease.
If your skin has any allergy suspect, the doctor may advise allergy testing, which can be performed as a skin or blood test.
In a blood test, a sample of blood is taken from a vein in your arm. it’s then sent to a lab where it’s tested to see if antibodies to specific allergens are present.