Hi Davide,
I don't usually post in the PN forum, but came across your messages in the New Posts section yesterday. I just wanted to post an article for you. It is a number of years old now too and may not be helpful but I'll post it anyway.
I hope you are seeing an Haematologist.
http://www.actaneurologica.be/acta/d...4/07-Bilic.pdf
Masked deficit of vitamin B12 in the patient with heterozygous
b-thalassemia and spastic paraparesis
Acta neurol. belg., 2004,
104, 173-175