The most common uncomfortable reactions include nausea and weakness, and a small number of patients will have varying degrees of nausea or vomiting (usually gradually returning to normal within 5-7 days after chemotherapy). Most patients have mild reactions and can tolerate them better, and only a few patients have larger reactions due to individual reasons and need to adjust their medication. Some chemotherapy drugs also have reactions such as hair loss, numbness in the hands and feet, and allergic reactions. Certain special chemotherapy reactions or precautions will be communicated and explained to family members and patients by the doctor before chemotherapy.