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.
Acetaminophen 500 mg is an active ingredient in Tylenol PM, according to Drugs.com. Acetaminophen acts to reduce fever and provide pain relief. This ingredient works by blocking prostaglandins, which are chemical signals that can cause fever and pain. However, Tylenol PM does not have anti-inflammatory effects like nonsteroidal anti-inflammatory drugs (aspirin, ibuprofen) do. According to Drugs.com, acetaminophen has no common side effects.