Some factors which are not yet recognized by the DSM-5 may motivate the avoidant/restrictive eating behaviors in ARFID: 
- Mental inflexibility
- Need for control/routine
- Different sensory experience of feeding/eating

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The DSM-5 has recognized three types of ARFID based on the driving forces behind the avoidant/restrictive eating. However, it is important to note that these driving forces may coincide with one another and that there are likely additional factors that may contribute to the development and progression of ARFID: 

1. Lack of interest
2. Sensory avoidance
3. Fear of aversive consequences

Types and Driving Forces of Avoidant/Restrictive Food Intake Disorder (ARFID)

Bourne, L., Bryant-Waugh, R., Cook, J., & Mandy, W. (2020). Avoidant/restrictive food intake disorder: A systematic scoping review of the current literature. Psychiatry Research, 288, 112961.

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