You can take steps at home to control itching from a chickenpox rash, such as taking oatmeal baths, applying cool compresses, and taking antihistamines by mouth A higher-than-normal temperature kills bacteria and viruses that cause illness. Medications that reduce fever stop this natural process, so these medications should be used only as needed. If a child with chickenpox does not act sick or complain of symptoms, you may choose not to give medication for fever. Most healthy children and adults recover from chickenpox without complications. See a health professional if you have any unusual, persistent, or worrisome symptoms.