On another call is aleve good for arthritis pain Characterized as an eating disorder, Pica causes people to eat what the National Organization for Rare Disorders describes as “non-nutritive” things. That umbrella term can include (but isn’t limited to) dirt, clay, paper, and paint. Interestingly, it’s not unusual for young kids to experience transient pica as a kind of phase, and pregnant women are also known to develop temporary pica cravings. The cause? Unknown. But in order to be diagnosed with full-blown Pica, a person’s symptoms must last for more than a month.