Woman treated by doctors after her blood turned blue
theguardian.com
theguardian.com
Subject, Action, important qualifiers.
And if she was famous and her name to have any relevance to the readers, then instead of "a woman" it would be her name in the title ("X treated for ...", and ditto for a man).
She could have died before see could be seen by a doctor, for example ("Accident victim bleeds blue blood").
She could found out on her own and started a cult ("Woman starts a cult after her blood turned blue")
She could have hidden it, fearing some superstition ("Woman lived with blue-blood disease for decades")
And any other combination of events...
It had a beginning, a middle, and a happy ending. And it contained useful information about not using too much of this stuff, or use it for too long.
The wiki page explains that "methylene blue" actually treats a variety of problems.
https://en.m.wikipedia.org/wiki/Argyria
But that probably doesn't affect the blood.
/s
You don't have to assume. "Woman, 25, diagnosed with methemoglobinemia" is the first sentence after the title.
> The two meds I can think of that would cause this are dapsone and benzocaine.
"Doctors say numbing agent for toothache to blame" is the next sentence after that. "Warren said the condition had been triggered by a numbing agent containing benzocaine" is further down.
> It's an easily treatable disease where we have the patient take methylene blue
"The woman was treated with an antidote, methylene blue" is in there too.
https://en.wikipedia.org/wiki/Sulfhemoglobinemia
> Sulfhemoglobinemia is a rare condition in which there is excess sulfhemoglobin (SulfHb) in the blood. The pigment is a greenish derivative of hemoglobin which cannot be converted back to normal, functional hemoglobin. It causes cyanosis even at low blood levels.
>It is a rare blood condition that occurs when a sulfur atom is incorporated into the hemoglobin molecule. When hydrogen sulfide (H2S) (or sulfide ions) and ferric ions combine in the blood, the blood is incapable of carrying oxygen.