Slapped Cheek (Fifth Disease): The Rash After the Fever
Slapped cheek, also called fifth disease, is a common and usually mild viral illness of childhood. It starts with a few days of mild fever and cold symptoms, followed by a bright red rash on the cheeks and a lacy pink rash on the body. Most children recover fully without treatment.
The name comes from the rash itself: the cheeks turn such a vivid red that the child looks as though they have been slapped. The illness is caused by a virus called parvovirus B19, and the older name fifth disease dates from a time when doctors numbered the classic childhood rash illnesses.
For most families, slapped cheek is a footnote: a slightly off-colour few days, a striking rash, and a quick return to normal. The main reason to understand it is a small group of people, especially pregnant women, who should seek medical advice if they are exposed. We cover that in detail below.
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Slapped cheek arrives in two stages. First comes a few days of mild illness: a low fever, a runny nose, a headache, tiredness and sometimes aching joints, which are more common in teenagers and adults than in young children. At this stage it looks like any ordinary cold, and most parents have no idea anything more distinctive is on the way.
Then, often just as your child seems to be getting better, the rash appears. The cheeks turn bright red and slightly raised, sometimes with a pale ring around the mouth. A day or two later, a fine, lacy, pink rash can spread across the chest, back, arms and legs. It can look dramatic, but it is not usually itchy or painful, and many children feel completely well by the time it shows up.
Other childhood rashes follow different patterns. Scarlet fever brings a rough, sandpapery rash with a sore throat and fever, while hand, foot and mouth disease causes small blisters in the mouth and on the palms and soles. If you are not sure which rash you are looking at, a doctor can help you tell them apart.
Slapped cheek is caused by parvovirus B19, a virus that only infects humans. It spreads the way colds do: through coughs and sneezes, and by touching contaminated surfaces and then the face. Outbreaks are common in schools and daycare centres, most often in late winter and spring.
Here is the twist that surprises most parents: children are most contagious during the early, cold-like phase, before anyone knows what they have. By the time the tell-tale cheeks appear, the infectious period has usually passed. That makes slapped cheek almost impossible to contain, and it explains why around half of all adults have already had it, often without knowing, and are immune for life. Good hand hygiene helps around the house, but there is no need for deep cleaning or isolation once the rash is out.
Parvovirus B19 is one of many everyday viruses that circulate through childhood. Others leave different signatures: parainfluenza, for instance, is the usual culprit behind croup and its barking cough. Meeting these common infections is a normal part of growing up, and one bout of slapped cheek generally means your child will not have it again.
Treatment for slapped cheek is comfort care only. There is no specific medicine for the virus, and antibiotics do not help because they work only against bacteria. Offer plenty of fluids, let your child rest as much as they want, and use pain and fever relief suitable for children if fever or aching joints are making them miserable, following the packet directions for their age.
One quirk is worth knowing in advance. The lacy body rash can fade and then reappear over several weeks, often triggered by heat, exercise, warm baths or sunshine. This is not a relapse, and it does not mean your child is infectious again. It is simply the skin's blood vessels responding to warmth, and it settles on its own without treatment.
If the fever is the part worrying you, our guide to when a child's fever is worth worrying about walks through what to check and when to seek help. Keep an eye on how your child is drinking, sleeping and behaving overall, which tells you far more than the rash ever will.
Because children with slapped cheek are no longer infectious once the rash appears, there is usually no need to keep them home from school or daycare once they feel well. This is the reverse of most childhood infections, where the rash marks the contagious phase, so it often surprises parents and teachers alike. Exclusion rules vary between states and territories, so check your state's guidance or ask your school or centre if you are unsure. Most children bounce back quickly, and slapped cheek rarely means a long stretch away from the classroom.
Your child may still need a day or two at home during the early fever stage, simply because they feel unwell. If you need time off work to care for them, a doctor can issue a carer's medical certificate for your employer. It is also considerate to let the school know about the diagnosis, so that anyone who is pregnant, whether staff or parents, can seek advice about their own exposure early.
See the same doctor each time
For most children and adults, slapped cheek is mild. The one genuine concern is pregnancy. Parvovirus B19 can occasionally affect an unborn baby, particularly in the first half of pregnancy, so any pregnant woman who has been in contact with slapped cheek should speak to her doctor or midwife promptly. Most adults are already immune, and a simple blood test can confirm this, but it is a conversation to have early rather than late. Prompt advice, not panic, is the goal.
People with certain blood disorders or a weakened immune system can also become more unwell, because the virus temporarily slows the body's production of red blood cells. If your child or a household member has one of these conditions and has been exposed, seek medical advice promptly. For any child, see a doctor if they look unusually pale, seem very tired or breathless, have a high fever that will not settle, or simply seem more unwell than a mild virus should make them.
Abby Health is an online-first clinic, so you can talk to an Australian GP about your child's rash from home, seven days a week. Over video, a doctor can look at the cheeks and the lacy rash, help you tell slapped cheek apart from other childhood rashes, and explain what to expect over the weeks ahead. If someone in your household is pregnant, the doctor can advise on sensible next steps for them too. Our help centre explains how Abby works for families and kids.
You can choose to see the same doctor each time, so your child's history is understood without repeating the story. If you need time away from work while your child is unwell, we can help with a carer's medical certificate. Book through our everyday family clinic when it suits you. Bulk billed for eligible patients with a valid Medicare card. Strict eligibility criteria apply. This is general information only and not a substitute for personal medical advice. If your child is seriously unwell, unusually drowsy or struggling to breathe, call 000.
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