The expression rizar el rizo is very common in Spain and highly used in all sorts of contexts and situations. Literally it means to curl the curl, or curling the curl; which metaphorically translates to complicate matters even further for no apparent reason. Gilding the lily and to loop the loop may be fairly approximate English expressions to connote this meaning.
To complicate matters
Rizar el rizo
To have a screw loose, off your rocker
Faltar un tornillo
To be mad at someone
Estar mosca
To lose your train of thought
Irse el santo al cielo
To give someone a piece of your mind
Cantar las cuarenta
To get bigheaded
Subirse a la parra
To give/have goosebumps
Ponerse la piel de gallina
To be on the ball
Estar al loro
To be down in the dumps
Caer(se) el alma a los pies
To find out the hard way
Enterarse de lo que vale un peine
To not act your age
A la vejez, viruela
Literally
Al pie de la letra
Wisdom comes with age
Más sabe el diablo por viejo que por diablo