Prolonged illness injures the spleen means that if you are sick for a long time, you will damage your spleen. The spleen is one of the five organs in Chinese medicine and its can affect many functions of the body. If the patient is sick for a long time, the body will be extremely weak and will show symptoms of spleen deficiency. Since the spleen is responsible for transporting water and dampness and water and grain essence, ascending and clearing, and regulating blood, etc. In the case of spleen deficiency, water and fluid tend to accumulate, mainly manifesting as swelling, abdominal distension, diarrhea and other symptoms of indigestion. It also tends to cause insufficient production of Qi and Blood, resulting in symptoms such as dizziness, weakness of the limbs and general lethargy. In addition, it may also affect the heart, kidneys and intestines, resulting in soreness and weakness of the waist and knees, and insomnia. Therefore, when patients develop spleen deficiency, they usually need to use drugs that strengthen the spleen and benefit qi, such as Ginseng Spleen Pill, Ginseng Spleen Pill, Radix Rehmanniae Pill, and Ginseng Ling Baijiao Pill, etc. It is recommended that patients should be guided to use the drugs through the doctor’s evidence.