The poster text in panel 4 is very much worth reading. I was going to type it out, but then I realised I shouldn't deprived people of the joy of reading it themselves.
It is much easier to read on the source website, though.
Lmao. It says; "I can't believe you're reading this tiny print. It's not at all interesting. Watch TV instead. I honestly feel a bit guilty putting this here because i'm totally wasting your time. It's just meaningess background text. On the other hand it's not like you'd be curing cancer if you weren't reading this. But that's okay. You're good as you are. Read tiny print if you want to."
Unironically doctors quite like self diagnoses from my experience (provides you use reputable sources such as the NHS website and you aren't trying to treat it yourself and asking a doctor for a professional opinion)
A good example is when I had anaemia. I was correct, but if I self medicated (which some idiot told me to, I rejected their advice) I would have taken iron. Turns out it was actually a folate deficiency, but the GP knew to give me a blood test because I suspected I had it. At least in the UK, if they didn't like you telling them about your self diagnoses, the NHS website wouldn't exist. The correct thing to do with your self diagnoses is to take it to a doctor, not treat it yourself.