The clinical manifestations of kidney essence deficiency mainly include developmental delay and hypogonadism. 1. Developmental delay: deficiency of kidney essence can be manifested as delayed closure of fontanel, short stature, mental retardation and slow movement. 2. Hypogonadism: men show impotence, premature ejaculation, spermatorrhea, night sweating (sweating abnormally after going to sleep and stopping sweating after waking up), etc., and women show scanty menstruation and menstrual closure. 3. Others: Kidney essence deficiency may also cause lumbar and knee weakness (a feeling of weakness in the waist and knees), dizziness, insomnia and forgetfulness, hair loss, tinnitus and deafness, thin and feeble pulse, and a thin tongue with little moss, etc. If you feel unwell, it is recommended to go to a regular doctor. If the body is in discomfort, it is recommended to go to a regular hospital to see a Chinese medicine practitioner to clarify the cause of the disease before the best treatment is carried out.