You cannot diagnose liver cancer only based on itchy skin. Itchy skin may be caused by other reasons, such as allergy, bacterial infection, jaundice, dry and dehydrated skin, and so on. There are many symptoms of liver cancer, itchy skin is only one of the symptoms, and you cannot judge liver cancer only by one symptom. Only if the patient has a sudden rise of alpha-fetoprotein, the presence of occupying blood flow signal in the liver found in imaging examination, or cancer cells found in liver nodule puncture, etc., can we judge whether he/she has liver cancer. Other causes of itchy skin: 1. Bacterial infection: if the patient’s skin is invaded by bacteria, it will also cause itching of skin. 2. Jaundice: patients with jaundice will also have itchy skin and accompanied by symptoms like yellow urine, yellow skin and yellow eyes. There are many causes of jaundice, such as bile duct stones, cirrhosis, hepatitis, hemolytic jaundice and so on. 3. Dry skin and lack of water: itchy skin can also be caused by dry skin and lack of water. 4. Allergy: allergy also exists in itchy skin symptoms, also accompanied by red rashes, air masses and so on. 5. Mosquito bites: can lead to inflammatory skin damage, local allergic damage to the skin, resulting in itchy skin. Itchy skin, it is recommended to consult a doctor in a timely manner, under the guidance of the doctor to identify the cause of the disease, symptomatic treatment.