pkpk was crying last night and now her eyes are swelled up.  Tears are strange; you cry when you're happy and when you're sad.  This discussion of tears reveals a terrifying plot!
Does it itch... 
It'd probably get inflamed, yeah.
Le pica... Probablemente se inflame.
Si le pica algo, se le va a inflamar.
Está coçando... 
Vai ficar inflamado.