Rosacea can be difficult to diagnose as very few people have all of the symptoms of the disorder. Several cases with rosacea remain undiagnosed as many patients have transient facial redness which comes and goes very quickly. Therefore, they fail to associate their intermittent flushing as a symptom of a possible medical condition. Besides this, many other skin conditions can display symptoms similar to rosacea.
Some of the conditions which appear like rosacea include:
Most patients do not need any specific tests for the diagnosis of rosacea. The doctor will diagnose the condition based on your history and physical examination findings.
In most people with rosacea, a doctor does not recommend any specific test. Rarely though, skin biopsy may be done to establish the diagnosis or a non-invasive test called skin scraping may be done. Skin scraping can help rule out a skin mite infestation by demodex, which causes symptoms similar to rosacea. A skin culture may be done to rule out infectious caused due to staph infections or herpes infections.
Blood tests are rarely done. Your doctor may recommend blood tests to exclude some infrequent causes of facial blushing and flushing such as systemic lupus, other autoimmune conditions, and dermatomyositis.
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