There are many types of RPP and each has its own symptoms. Anorexics, for example, refuse to eat, and bulimics eat a lot, do not feel full, and then get rid of what they have eaten in various ways.
According to the DSM-V classifier of diseases, RPP is characterized by psychological and behavioral signs.
Psychological signs: preoccupation with nutrition, food, body weight; feeling anxious while eating; loss of control while eating; distorted perception of your body; body shape, weight; persistent beliefs about good and bad food; changes in the emotional and psychological state; using food as a source of comfort (reduce fatigue, boredom); using food for self-punishment.
Behavioral: diet-motivated behavior (fasting, calorie counting, etc.); eating food alone; changing the style of clothing (baggy); excessive or compulsive physical activity; witnessing attacks of uncontrolled overeating.
If you find yourself in yourself 2-3 of the above signs, you can suspect an eating disorder.
The specific type of RFP will help to identify the specialist during the diagnosis and conversation.