Fevers with a rash and your child's eyes: HFMD, chickenpox, shingles and measles
Most fevers with a rash pass at home. A few put the eye at risk, and a rash on the nose tip is one of them. Here is which eye signs can wait a day and which cannot.
- Hand, foot and mouth disease is mainly a mouth and skin illness. Eye involvement is described only in rare case reports, so a painful red eye in a child with it should be examined, not assumed to be simple pink eye.
- Chickenpox spots can reach the eyelids. The NHS advises medical help if spots appear near the eyes.
- Shingles with a rash on the nose tip or one side of the forehead can involve the eye. Same-day review matters, because antiviral medicine works best within about 72 hours of the rash starting.
- Measles often begins with red, watery eyes. The WHO recommends two doses of vitamin A for children under 5 with suspected measles, given on the doctor's instruction.
- Pain, light that hurts, hazy vision or a blister on the eye means a same-day eye review, whichever illness is behind the rash.
A child with a fever and a rash is usually a child with a virus, and most of these illnesses pass at home. The eyes are a small part of the story, but in three of these illnesses they are the part that should not wait. This page goes through hand, foot and mouth disease, chickenpox, shingles and measles, one at a time, and says plainly which eye signs mean a same-day review.
My child has hand, foot and mouth disease. Do I need to worry about the eyes?
Usually not. Hand, foot and mouth disease (HFMD) is mainly a fever, mouth ulcers and a rash of spots on the hands and feet. The NHS describes it as something that "usually gets better on its own in 7 to 10 days", and neither the NHS nor the CDC lists the eye as a regular part of it.
Eye involvement does appear in the medical literature, but as rare individual case reports. I cover that in pink eye in children, and the point stands here: a red eye in a child with HFMD is not automatically "just pink eye riding along". Both spread by hands touching the face, so a red eye is common enough by coincidence, and a painful or light-sensitive eye is a reason to have the eye looked at.
The action: treat the illness at home as your child's doctor advises, wash hands, and watch the eyes. If one becomes painful, very red, hurts in light or looks hazy, see a doctor the same day.
How do I stop HFMD spreading at home and through the eyes?
With hand washing and separate towels. The Ministry of Health Malaysia advises washing hands with soap and water before preparing food, after using the toilet, after changing nappies and after cleaning a child's stool. It also advises not sharing toothbrushes, towels, cups, spoons and forks, and washing toys and surfaces the child's saliva has touched.
The CDC adds a line that suits eyes well: avoid touching your face with unwashed hands, "especially your eyes, nose, and mouth". Give your child their own face cloth for the duration. Keep a child with HFMD at home rather than at the nursery, as the Ministry advises.
For the school-day question with a red eye on top of it, how long a child with sore eyes must stay home has the detail.
What does chickenpox do to the eyes and eyelids?
Chickenpox spots can appear anywhere on the skin, and that includes the eyelids and the skin around the eyes. The NHS describes the rash as spots that "fill with fluid and become blisters" before they scab. Most children get through it with itchy lids and nothing more.
The NHS advice is to get medical help if spots appear near the eyes. I would add the practical version: a spot on the lid margin, or a spot on the eyeball itself with redness, pain or a child who hates the light, is worth an eye doctor the same day, because a blister on the surface of the eye needs looking at under magnification. There is no reliable figure for how often chickenpox affects the eye itself, so this page does not give one.
The action: stop the scratching and rubbing (short nails help), keep the child home until every spot has scabbed over, and see a doctor the same day for any spot on the eye, a painful red eye or hazy vision. Chickenpox is infectious from about two days before the spots show until they have all scabbed, which the NHS gives as usually 5 days after they appear.
Why is shingles on the forehead or nose tip an eye emergency?
Because the nerve that supplies the tip of the nose also supplies the surface of the eye. Shingles is the chickenpox virus waking up again in someone who has had chickenpox, and when it follows the nerve to the forehead, upper lid or nose, the eye can be involved. Doctors call this herpes zoster ophthalmicus.
The American Academy of Ophthalmology says the rash "may involve the tip of the nose or nasal ridge, known as Hutchinson sign", and a rash in that spot raises the chance that the eye is affected. The NHS says shingles with a rash on or near the eye or nose needs an urgent GP appointment or NHS 111, and that anyone aged 17 or under with shingles should get urgent advice. Antiviral medicine works best when started within about 72 hours of the rash appearing (AAO, NHS).
Shingles is uncommon in children. That is a reason to be a little more alert, not less, because a rash on one side of the forehead or nose can be mistaken for something else. The eye problems it can cause include inflammation of the cornea (keratitis) and of the inside of the eye (uveitis), and a clinic visit with a slit lamp is how we check for them.
The action: a blistering rash on one side of the forehead, upper eyelid or nose tip, with or without a red eye, means the doctor and then the eye doctor the same day. Do not wait for the eye to hurt. For the lid side of this, see swollen eyelid in children, when it is urgent.
What does measles do to a child's eyes?
Red, watery eyes are one of the early signs. The AAO says most people with measles develop them. The CDC lists "Red, watery eyes (conjunctivitis or pink eye)" among the first signs, along with a high fever, cough and runny nose, and the NHS describes "red, sore, watery eyes" in the same early stage. The rash comes a few days later and starts on the face.
The American Academy of Ophthalmology lists six ways measles can harm the eyes: conjunctivitis, keratitis (infection of the cornea), corneal scarring, retinopathy, optic neuritis and blindness. The WHO names blindness among the complications of measles. The AAO describes measles as a leading cause of childhood blindness in developing countries, so the serious end is real even if most children never reach it. Pain, redness, tearing and light sensitivity are the symptoms the AAO attaches to keratitis.
The action: if measles is suspected, phone your doctor before you arrive, because it spreads very easily (the NHS asks for this). A measles child with a painful eye, a very light-sensitive eye or reduced vision needs an eye doctor in addition to the paediatric care.
Does a child with measles need vitamin A?
According to the WHO, yes, in children under 5 with suspected measles, as treatment decided by the doctor. The fact sheet says: "Two doses of vitamin A are recommended for all suspected measles cases in children under 5 years of age, immediately on diagnosis and repeated the next day, according to the dosing indicated by the health practitioner." A third dose goes to a child with signs of vitamin A deficiency with eye complications.
The AAO notes that the WHO and the CDC suggest two doses of vitamin A, given 24 hours apart, "to prevent vision loss". This is a dose chosen by the treating doctor, not a tonic to buy from the pharmacy. Do not give extra vitamin A on your own, and do not start it because of a rash. Why measles drains the body's vitamin A, and what real deficiency looks like in the eye, is in vitamin A and children's eyes.
The bigger protection is earlier. The WHO says children should receive two doses of the measles vaccine, and your child's vaccination schedule tells you when each is due.
Which signs in a child with a rash mean the eye needs same-day review?
These do, whichever illness is behind the rash: pain in the eye, light that hurts, vision that is hazy or reduced, a visibly clouded surface, a blister on the eyeball or lid margin, or a rash on the nose tip or one side of the forehead. A red eye alone, with a happy, playing child, can usually be watched for a day.
It helps to ask three questions: is the eye painful, does light hurt, and can my child see as before. If the answer to any is yes, go. For a child who cannot tell you, look for squeezing the eye shut, turning away from a window and a face that is tight on one side. My child says their eye hurts, and when to go today covers the same checklist for a child who can talk.
Whatever the rash, never put old eye drops, steroid drops or a home remedy in an eye you are worried about before it has been looked at. Wash your hands, keep the child's towel separate, and bring your questions to the doctor.
- The eye is painful, or light hurts it.
- Vision is hazy or reduced, or the surface of the eye looks cloudy.
- There is a blister on the eyeball or the edge of the eyelid.
- A blistering rash is on the tip of the nose or one side of the forehead.
- Measles is suspected: phone ahead first, because it spreads easily.
Common questions
Can hand, foot and mouth disease cause pink eye?
Can chickenpox spots get in my child's eye?
Why is shingles near the nose or forehead urgent?
Can my child catch chickenpox from someone with shingles?
Does measles affect the eyes?
Should I give my child vitamin A for measles?
How do I stop a rash illness spreading to the eyes at home?
- World Health Organization · Measles fact sheet · www.who.int
- American Academy of Ophthalmology · 6 ways measles can harm eyes and vision · www.aao.org
- American Academy of Ophthalmology · EyeNet, Herpes zoster ophthalmicus pearls · www.aao.org
- CDC · Signs and symptoms of measles · www.cdc.gov
- CDC · About hand, foot and mouth disease · www.cdc.gov
- CDC · About shingles · www.cdc.gov
- Kementerian Kesihatan Malaysia, Info Sihat · Penyakit tangan, kaki dan mulut (HFMD) · infosihat.moh.gov.my
- NHS · Chickenpox · www.nhs.uk
- NHS · Shingles · www.nhs.uk
- NHS · Hand, foot and mouth disease · www.nhs.uk
- NHS · Measles · www.nhs.uk