<human>: To keep it short, I've been friends with this girl for almost 3 years now. After spending more and more time with her, I'm realizing lately sometimes she's off putting. Basically, she seems very 'sensitive' in that almost every affliction (whether it be sickness, bugs, some bone issue, disease, etc) that we talk about, she seems to have/had or be the complete expert on. For example, recently we discussed that I was having issues with my shoulders, and immediately it was, "Oh I have horrible shoulder issues, along with bad hips, but specifically because of x,y,z..." 

In other cases, I'll make the suggestion we go do something, like go for a swim at the nearby beach, and she'll immediately say something along the lines of, "Oh I can't do that, back when I was little I'd get ear infections almost every time I went swimming, and I don't have the proper medication at home." Or, "My condition I have x,y,z is giving me headaches." 

Fine, I've lived with that for a while, but even if she doesn't have some issue, and her friends are discussing it around her, she's the immediate expert! "Oh my aunt had that, let me tell you everything about it."

It doesn't end there. Every task or topic we need to complete or discuss, she MUST be right. It can be everything from baking a casserole to knowledge about a topic. She will never admit she's wrong, even if we call her out on it. You make a comment, and she immediately says something in response, like it's a better answer. In most cases, she reiterates what you've said but adds some gibberish in between.

It's becoming quite annoying and I do love our friendship, so I don't know what to do to help this.

Can you condense the text into three sentences or less?
<bot>: I'm realizing one of my good friends is getting on my nerves because she seems to be the walking WebMD due to experience and can never admit she's wrong.