Chickenpox can usually be eaten with watermelon, and watermelon does not cause chickenpox to worsen. However, if you are allergic to watermelon, it is recommended that you should not eat it. Chickenpox is caused by chickenpox-herpes zoster virus infection, belongs to an acute infectious disease, there is a self-healing. In terms of diet, light and nutritious food should be the main focus. Watermelon is a common fruit and will not aggravate chickenpox after consumption. However, avoid eating too much at once to avoid diarrhea symptoms. People who are not allergic to watermelon can eat it, but if they are allergic, they should not eat it. During the onset of chickenpox, if there is fever, you can take oral acetaminophen treatment; if necessary, you can use acyclovir, vasiclovir and other antiviral drugs; during the treatment, you also need to keep the skin clean and hygienic, to avoid infection. It is recommended that chickenpox patients consult a doctor in a timely manner, strictly follow the doctor’s instructions for the use of medication, and if there is any discomfort after eating watermelon, you should also inform your doctor in a timely manner.