Pathognomonic features are:

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Pathognomonic features are specific characteristics that are unique to a particular disease or lesion, making them diagnostic for that condition. They are often considered the "gold standard" for diagnosis, as their presence confirms the disease without the need for further testing or evaluation. Nonspecific symptoms or signs are not pathognomonic, as they can occur in many different conditions and do not provide a definitive diagnosis. Pathognomonic features are not always present in infectious diseases, but when they are, they are highly characteristic of that particular pathogen.

Pathognomonic Features Are