Child Depression symptoms are many in number. Some are very extreme and includes sadness and hopelessness. Such cases are often left undiagnosed or untreated; this is because these types of behaviors are treated as ordinary changes which a child goes throug as he or she grows up. A depressed child may show signs of appetite disturbances that may manifest itself as increased or decreased appetite. Childhood Depression can also be exhibited sleeping patterns which implies either extreme sleep or abrupt insomnia.