Are you kidding me? You're asking a layman to make a definite diagnosis on the basis of one mild symptom?
Get real!
Get the child to a doctor.
A child who complains of headache and sleepiness after coloring is suffering from what condition?
2 answers
Ahhh. Concusion, definitely. Post concusion symptom.
or, one of several hundred other things...http://symptomchecker.webmd.com/multiple-symptoms?symptoms=dizziness|drowsiness|headache|impaired-color-vision&symptomids=81|360|115|566&locations=2|2|2|2
or the kid is sleepy, because she didn't sleep from an allergy, and has headaches from the same (mold, ragweed, grass, ...)
I think I would have the kid see a doctor.
And it could be schizophrenia, or bipolar disorder. But I bet the doctor feels of the neck lympth nodes, then examines the ear drums next
or, one of several hundred other things...http://symptomchecker.webmd.com/multiple-symptoms?symptoms=dizziness|drowsiness|headache|impaired-color-vision&symptomids=81|360|115|566&locations=2|2|2|2
or the kid is sleepy, because she didn't sleep from an allergy, and has headaches from the same (mold, ragweed, grass, ...)
I think I would have the kid see a doctor.
And it could be schizophrenia, or bipolar disorder. But I bet the doctor feels of the neck lympth nodes, then examines the ear drums next