Chickenpox usually takes about 10 days from the onset until it dries and crusts over, during which time it is generally not recommended to wash your hair. If you wash your hair during the onset of the disease, the shampoo used will stimulate your skin, or if you rub your hands, it may cause the blisters to break or the scabs to fall off, which may cause secondary infection. In addition, chickenpox patients will be accompanied by fever, if the water temperature of hair washing is not properly controlled or not timely blow-dried, it may aggravate the condition, and may even cause high fever and headache. Therefore, patients are advised to wash their hair after their condition has fully recovered (usually about 10 days). If patients have severe scalp itching, they can use cotton swabs dipped in stovepipe lotion to locally dab to stop the itching, or jointly use antibiotic ointment to apply locally to prevent the occurrence of secondary infections. At the same time, patients should mainly rest in bed, avoid eating seafood and other hair products, eat lightly and drink more water.