According to Nielsen Media Research, the episode was seen by an estimated 0.278 million household viewers and gained a 0.13 ratings share among adults aged 18–49.
While undergoing a physical exam at his doctor's office, Dennis (Glenn Howerton) is surprised to learn he has high blood pressure.
He rejects the doctor's recommendation of medication, insisting that he can command his body to lower his blood pressure and will take care of the problem on his own.
With his car in the shop, Dennis reserves a rental and ends up with a luxury electric vehicle started from an app on his phone, a feature he dislikes intensely.
Dennis decides to buy a new phone, but learns that he can only get one immediately if he adds a new line to his family plan - which is under Frank's (Danny DeVito) name.
[1] The episode was inspired by events in Glenn Howerton's life, who related an anecdote in which a weekend trip was ruined due to a malfunction between his phone and a Tesla Model X.
"[3] In its original American broadcast, "Dennis Takes a Mental Health Day" was seen by an estimated 0.278 million household viewers and gained a 0.13 ratings share among adults aged 18–49, according to Nielsen Media Research.
"[6] Danielle Ryan of /Film wrote, "The characters and situations on It's Always Sunny in Philadelphia may seem too ridiculous to ever be real, but it turns out that sometimes truth and fiction aren't all that different.