See your primary md
The path to the most accurate answer is to start with a thorough history and exam.Roughly 80% of the time it's enough to make a diagnosis.
In many cases, other testing may be needed to sift through the numerous possibilities, many harmless, to get a definitive answer. The md tries to use occam's razor (don't be scared, it's a metaphor):find the simplest, most direct solution. Your "razor"? See md.