: The episode explores various characters' stances on having children.

: Owen Hunt continues to grapple with PTSD, experiencing "combat flashes" that concern Cristina. Medical Cases & Foreshadowing "Grey's Anatomy" Sympathy for the Parents (TV Episode 2010)

: Tensions rise as Mark's daughter, Sloan Riley , returns while in labor, complicating his relationship with Teddy.

" Sympathy for the Parents " is the 19th episode of Grey's Anatomy 's sixth season, originally airing on . The episode is a pivotal character study for Alex Karev , using the arrival of his younger brother to peel back layers of his troubled upbringing. Plot Summary & Character Development

: Alex’s younger brother, Aaron Karev (played by Jake McLaughlin), arrives at the hospital seeking a pro-bono surgery for an umbilical hernia. Their interaction reveals that Alex was essentially a surrogate father to his siblings due to their parents' "catastrophic failure," a past that involved juvenile detention and difficult choices.

: Derek expresses a strong desire for a family. Despite initial hesitation rooted in her own childhood trauma, Meredith eventually agrees to start trying for a baby.

: The couple faces their first major ideological rift regarding children; Callie realizes she definitely wants them, while Arizona remains resistant.