hi there, I think your daughter is suffering from some hormonal imbalance and you will need her to be investigated to getr to the cause. You can start with a blood test to be done for her hemoglobin levels to rule out anemia as a cause of dizziness and fatigue,also get her blood sugars done to rule out juvenile diabetes
. Besides this blood for thyroid hormone profile and a CTscan brain should be done. These tests will help you pin point the fault and then it can be investigated further if need be.The white spots
could be due to fungal infection
or vitilago which will also need to be looked into further by a dermatologist
. Take care.