Simpsoncalifragilisticexpiala-Annoyed-Grunt-cious: Season 8, Episode 13

Mr. Burns: What's this strange sensation in my chest?

Mr. Smithers: I think you're heart's beating again.

Mr. Burns: Oh, that takes me back.  God bless you, Sherry Bobbins!

In this episode, Marge begins to lose her hair.  Her hair loss becomes significant and noticeable, and she goes to Dr. Hibbert to get checked out.  Dr. Hibbert tells Marge that there's no physical reason why she is losing her hair.  He is perplexed.  Then, Bart and Lisa call Marge (from separate lines) and request something to drink.  Marge grumbles, and a clump of hair falls from her head.  Dr. Hibbert, who had been observing Marge, then determines that the problem is probably stress.  Marge hires a nanny, Sherry Bobbins, to help her deal with the stress of taking care of the family, and her hair eventually grows back.  This episode showcases the negative effects of stress.  It shows how stress can take both a physical and an emotional toll on a person.

Brother's Little Helper: Season 11, Episode 2

"That's the end of your Looney Tunes, Drugs Bunny."   ---Chief Wiggum

After Bart wreaks havoc on Springfield Elementary, Marge and Homer agree to put Bart on an experimental, mind-altering medication so that he won't be expelled.  Principal Skinner shows that Bart's bad behavior affects other students negatively.  He shows Marge and Homer a chart of Bart's classroom.  The students around Bart all have poor grades, but the ones farthest away from him have good grades.  Principal Skinner notes that Bart clearly suffers from Attention Deficit Disorder (ADD).  He tells Marge and Homer that ADD can cause children to become restless and easily distracted.  While he is telling the Simpsons this, Homer is messing around with an item from Principal Skinner's desk and is clearly not paying attention.  This suggests that Bart is similar to his father and that there may be a link between genes and ADD.  

An important dialogue between the psychiatrist and Bart's parents occurs during the episode.  When describing the ADD medication, the psychiatrist says, "This pill reduces class-clown-ism 44%, with 60% less sass-mouth."  The psychiatrist proceeds to tell Homer and Marge, "The only thing more effective is regular exercise."  Homer gasps and shudders.  This dialogue pokes fun at the overuse of ADD medications and the ignorance of other potentially effective and safer methods of treating restless children.

After Bart starts taking the medication, called "Focusin," his behavior and school performance improve dramatically.  He does not get into trouble, spends time in his room reading quietly, and greatly increases his productivity.  However, Focusin does have some negative side effects.  Eventually, Bart becomes paranoid and wraps himself in foil because he believes that people are spying on him and trying to read his thoughts.  When Marge and Homer bring him back to the psychiatrists, the doctors blame Bart's reaction on a carboxyl group.  They plan to switch Bart's medications and start him on some of Focusin's "sister drugs."  Bart vehemently protests this switch, quickly gobbles up a handful of Focusin pills, and runs out the door, suggesting that Bart is attached to and dependent on the psychotropic drug.

In the end, after a series of unrealistic events, Bart is taken off the medication, and everything in the Simpson family returns to normal.

Yokel Chords: Season 18, Episode 14

"So you're saying I tell people to have a cow because deep inside, I want them to have a cow."   ---Bart Simpson

Again, although this episode does not centralize on health, it does portray elements of mental illness.  Bart goes to see a psychiatrist, Dr. Swanson, and he eventually starts to like her after she lets him play video games during an appointment.  The office is set up in the stereotypical way: a doctor sits in a chair, and a patient lays on a couch and pours out his feelings.  After Bart's sessions expire, he is distraught and feels the need to go back.  Marge saves up some money and brings him to one last appointment.  Bart uses this appointment to gain closure, and the episode ends with Dr. Swanson realizing that she is going to miss Bart, which is shown in the following dialogue:

       Dr. Swanson: Will we ever see each other again?

       Bart: Who knows.  Anything's possible.  One of these days, I might have a complete psychotic          breakdown.

       Dr. Swanson: I'd like that.

Grift of the Magi: Season 11, Episode 11

"Hello. I'm Dr. Stupid!  I'm going to take out your liver bones.  Oops, you're dead."  

---Ralph Wiggum

Although this episode is not explicitly about health, a significant incident does occur.  Bart falls off Homer's bed and lands on a bowling ball, causing him to break his tailbone.  Dr. Hibbert puts Bart's rear in a cast equipped with a "viewing window."  This allowed Dr. Hibbert to take off part of the cast so that the medical students could examine Bart's coccyx.  The medical students look with fascination and then proceed to scribble feverishly on their clipboards.  Bart is not too thrilled throughout this ordeal, but Dr. Hibbert justifies his actions by noting that they are in a "teaching hospital."  This incident shows that "teaching hospitals," can sometimes create awkward and uncomfortable moments for a patient.