Sienna, There are physical, emotional and relational symptoms. Physical symptoms can be headaches, back pain, GI problems, (diarrhea, upset stomach, reflux), trouble sleeping, weight loss or weight gain, or chronic fatigue. Emotional symptoms can be depression, moodiness, overreactions, anxiety or anger and tantrums. Relational symptoms are withdrawal from friends and family, anger/tantrums, overreactions or more arguments.