Thanks for consulting in Healthcare. We should differentiate next diseases:
1.
Iron deficiency anaemia caused lack of iron in the food.
2. Lupus erythematosis, which we exclude after blood test
3. Lungs problems;bronchoectasis
4. Polycythaemia, a condition where the blood is too thick
5. Fungual infection
A blue spot on the neck is more often Mongolian blue spot, congenital, a benign, flat, congenital
birthmark with wavy borders and irregular shape.Do you know it is also extremely prevalent among other East, Asian peoples.
Mongolian blue spot usually disappear till the end of first year.
What should you do. If I were your doctor i would check your daughter blood test: hemoglobinum, RBC and etc, iron,
liver test, check lungs function, consult at
dermatologist.
Best regards
Dr.Svetlana