One of the more unexpected symptoms of a lysine deficiency is excessive amounts of hair loss. Although this can be a worrisome symptom, it's also one that's relatively simple to notice, making it easy to get checked out once you do. During the initial stages of this condition, your hair may appear to be thin and sparse around your scalp. When you are brushing or washing your hair, try to notice whether or not your hair is breaking. If it is, you may be affected by this condition. Standard hair growth should return once you get lysine back into your diet.Next