PICA's cause is unknown, although a number of explanations have been proposed in the literature. Nutritional, psychological, cultural, neuropsychiatric, physiologic, and sensory linkages are all part of these hypotheses. The observations from individuals with PICA who claim to love the taste, texture, or fragrance of the foods they eat support the latter two possibilities. PICA has been linked to family stress in certain people. PICA has been linked to addiction and addictive behavior in several research studies. PICA may be part of the obsessive-compulsive disorder (OCD) continuum of disorders, according to a recent analysis.