Have they tested her for mononucleosis
My freshman year of high school i caught mononucleosis (mono) from a friend sharing drinks and other things. My symptoms were like the Flu was how my doctor described it. I was always tired and many aches including bad headaches. After a while I had the chills and a slight fever with a sore throat along with the other symptoms.. If your daughter went to the doctor and the doctor did not say anything about it i would go back and ask. My doctor to told me he could not find anything wrong with me until I was informed my friend in fact had mono I then went back and my doctor then told me that was the cause of my problem
Enlarged blood cells (macrocytosis) is shown up on a lab test with elevated MCV (mean cell volume). Optimum MCV values 87 to 92 cu. microns. A vitamin B12 serum range under 550pg/mL (405pmol/L) would be a confirmed vitamin B12 deficiency in Japan and most countries in Europe.
The MCV is increased in:
Hereditary anaemia/s
Megaloblastic anaemias (pernicious, folic acid deficiency, B12 deficiency)
Reticulocytosis (acute blood loss response)
Artifact (aplasia, myelofibrosis, hyperglycemia, cold agglutinins)
Liver disease
Hypothyroidism
Drugs (anti-convulsants/zidovidune treatment)