Pathology of the Kidney
Kidney Essence Deficiency
Kidney Essence has a Yin and a Yang aspect. Kidney Essence Deficiency shows symptoms of Yin Deficiency and of Yang Deficiency. Kidney Essence Deficiency often leads to symptoms manifesting as early as in childhood.

Cardinal symptoms Congenital malformation, late retarded closure of the fontanel, incomplete closure of the fontanel, slow physical or mental development, weak bones, loss of teeth, bad memory, premature senility, infertility, premature graying of the hair, loss of hair.
TCM Information Symptoms, causes, treatment tips, root and branch, point-combination

Pathogenesis of selected symptoms
Congenital malformation Congenital malformation originates when the development of the skeleton is not governed adequately due to Kidney Essence Deficiency. Poor development Delayed or poor development (in children: delayed ability to walk or talk) originates because the physical and mental development cannot be adequately governed due to Kidney Essence Deficiency. Retarded closure of the fontanel Retarded closure of the fontanel originates because the development of the bones depends on Kidney Essence. Disorders in the development of the teeth Disorders in the development of the teeth originates because the development of the teeth cannot be adequately governed due to Kidney Essence Deficiency. Loose teeth Loose teeth originate because the Yang aspect of the Essence must hold the teeth and the Yin aspect is responsible for the structure of the teeth. Kidney Essence Deficiency causes the teeth to be brittle or loose. Forgetfulness Forgetfulness originates because the Yin aspect of the Kidney Essence fails to provide enough nourishment to sufficiently fill the brain with marrow. Deafness Deafness and loss of hearing originates because the Yin aspect of the Kidney Essence fails to provide enough nourishment for the ears. Difficulties during pregnancy and childbirth Difficulties during pregnancy and childbirth originate because Kidney Essence controls pregnancy and childbirth; if the Essence is deficient this function is weakened. Tinnitus Tinnitus, ringing in the ears, originates because the Yin aspect of the Kidney Essence fails to provide enough nourishment for the ears. Osteoporosis Osteoporosis originates because the Yin aspect of the Essence is responsible for bone density; if this aspect is deficient, bones become weak and brittle. Premature graying of the hair Premature graying of the hair originates because the hair is not adequately nourished due to deficiency of Kidney Essence. Loss of hair Hair loss originates because the hair is not adequately nourished due to deficiency of Kidney Essence.