In general, infectious syphilis refers to the primary and secondary stages because syphilitic chancres, mucous patches, and condylomata lata are highly infectious lesions. Dry rashes, by exception, are typically noninfectious.
It appears to reduce pain primarily in the central nervous system by more than one mechanism, possibly in part by inhibiting a form of COX known as COX-3, although this is the subject of much debate. It is, therefore, considered to be a weak analgesic and does not possess anti-inflammatory properties. What this means to you is that acetaminophen is great for headaches, fever and minor aches and pains, but wonât reduce inflammation due to, say, a muscle sprain.
How does acetaminophen relieve pain? Iâm always amazed that it can take my headache awayâand reduce a feverâso quickly. This monthâs faculty expert, Ewan McNicol, assistant professor of anesthesiology, responds: The short answer to this question is that we donât fully understand how acetaminophen works. Commonly known by its brand name of Tylenol, acetaminophen belongs to a class of painkillers known as non-opioid analgesics.