Hi Zobo,
I'm a habitual "self-diagnoser"

. Personally, I believe it's always good to get a medical diagnosis. The fact is, many of us aren't equipped to make proper diagnoses and prescribe the most effective treatment. Self-diagnosing is basically guessing what you think is wrong based on your limited knowledge. My personal experience has taught me that that approach can lead to frustration and prolonging or worsening the illness (if there really is one).