Eating One Meal A Day

Patient: Hi, i’m a 14 year old female, i’m almost 15, for the past three years I haven’t been eating at school and i don’t eat breakfast, i think i get to nervous to eat.I only eat one meal a day at 4.00pm and hardly eat anything else for the rest of the day. Now even on weekends i have been eating like this.I don’t purge or exercise after i eat. Are there any effects to what i am doing and do i have a possible eating disorder or problem? What do you recommend?