Hi @pollyanne - I too have head itchiness and hair falling out.. My Dr. suggested I take Zinc and Biotin supplements. I also added Dove derma care Scalp shampoo. Things seem to have improved ( not 100% but maybe 80%) My hairdresser also mentioned that low iron can cause hair loss. We have not been eating nearly much red meat as we used to so may try to add a little more to the diet. I realize none of this may be helpful to those with more serious scalp problems but thought I would pass this along for what it's worth.
Best to all
Ainsleigh