'Medicine is of no avail, when love's sweet pain is the ail' is the message on the piece of paper on the floor by the girl's bed. There's nothing a proper doctor could do, but the grinning quack can. The old woman laughs encouragingly, and the boy with the enema syringe knows what's wrong as well. Cupid, the god of love, triumphs above the door. This was a very well known and popular 17th century theme.