How do you say crazy in the head in spanish?

The words for "crazy in the head" in Spanish are, "loco en la cabeza," if you are talking about a male, and "loca en la cabeza" if you are talking about a female. They are pronounced, "Loco (or loca) ehn la ka-BAY-sa." Sites such as learn-spanish.co.il provide audio pronunciations of many common Spanish words.