Here are five common culprits of hair loss in dogs that should be discussed with your veterinarian. Allergies are a frequent cause of hair loss in dogs. This may due to environmental triggers such as pollen, molds and dust mites, or due to parasitic triggers like fleas or mites. Food allergies are another possible cause of hair loss.
Anemia, also spelled anaemia, is usually defined as a decrease in the amount of red blood cells (RBCs) or hemoglobin in the blood. It can also be defined as a lowered ability of the blood to carry oxygen.
In iron-deficiency anemia and anemia of inflammation, microcytic cells predominate, but in Î²-thalassemia and hemoglobin E disease, target cells are also apparent (Figure 3Figure 3Blood-Smear Features of Microcytic Anemias. and interactive graphic, available with the full text of this article at NEJM.org).