All the forms of Dermatitis can be easily diagnosed with the means of a thorough physical examination. The doctors, in most of the cases, depend on the appearance of the symptoms on the skin as well as the patient’s account on his medical history, for detecting this disease. Your health care provider may ask numerous questions to learn if the symptoms are associated with the extremity of the environment, contact with certain pollutants or if the symptoms have been aggravated due to the occurrence of a specific situation.  

In case, the doctor is not able to clearly detect this infection with the means of simple physical examination, he may opt for conducting a skin biopsy test. In this test, a sample of the affected skin is obtained and sent to the lab in order to test it under the microscope. This test is especially done to rule out the options of the occurrence of other skin diseases that may have symptoms similar to dermatitis. He may conduct a patch test, in which a slight swab of the infected skin is procured in order to identify the allergen responsible for triggering this disease in the patient. It is important to note that there are no blood tests conducted for identifying this disease.