Anxiety & depression
Anxiety or depression can manifest in children in a variety of ways including: feeling nervous, having an increased heart rate; breathing rapidly (hyperventilation); sadness, a feeling of hopelessness, and mood changes (i.e., irritability or anger); social withdrawal; changes in appetite; changes in sleep; vocal outbursts or crying; difficulty concentrating; fatigue and low energy, physical complaints (such as stomachaches, headaches); or feelings of worthlessness or guilt.