What should you know about scarlet fever but no fever?

A person may have no fever reading if the illness is early, mild, or partly settled, or if medicine has lowered the temperature. Thermometers can also give different readings depending on the method used. The rough red rash associated with scarlet fever can occur with a sore throat, red tongue, headache, or swollen glands, but none of these features proves the diagnosis on its own.

A [Fever](/symptoms/fever/) is only one possible feature. The clinician will consider the rash, throat examination, exposure history, and general condition. Because scarlet fever is associated with [Strep Throat](/conditions/strep-throat/), [Sore Throat](/symptoms/sore-throat/) deserves attention even when the temperature is normal.

Contact a healthcare professional if a sandpaper-like rash appears with throat discomfort or other features of scarlet fever. Record when the rash began, where it started, temperature readings, medicines given, and any known contact with someone who had a throat infection. Offer fluids and rest, and use only medicines suitable for the person. If infection is confirmed, take the prescribed [Antibiotic Treatment](/treatments/medical-management/antibiotic-treatment/) as directed.

Seek urgent care for breathing difficulty, inability to swallow liquids, signs of dehydration, confusion, severe weakness, rapidly increasing neck swelling, or a person who looks acutely ill. A normal temperature does not cancel these warning signs. Prompt review is also sensible when a rash is spreading quickly or throat pain prevents drinking.

Could the rash and throat symptoms fit scarlet fever without fever? Should the throat be tested? How should temperature be checked, and what symptoms should prompt another review?