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.
Stop taking Tylenol and call your doctor if: you still have a fever after 3 days of use; you still have pain after 7 days of use (or 5 days if treating a child); you have a skin rash, ongoing headache, or any redness or swelling; or. if your symptoms get worse, or if you have any new symptoms.