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Dr Anna Maw, Paediatrician
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Consultant pediatrician at Cambridge University NHS Trust in the UK. A child doctor specializing in brain development and neurology. She has three children.
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Baby health

Sun safety

Babies are much more sensitive to the sun than adults are both in terms of sunburn and overheating. We need to think their protection through for them. There are several avoidable risks that you need to avoid because serious, potentially fatal, problems can arise from babies becoming too hot in the sun.
In Short

Babies can suffer several medical problems if they have too much sun, including:

Sunburn

Heatstroke

Prickly heat

If your baby has been in the sun and shows any of the following symptoms, you should take your baby immediately to ER or A&E:

Fever or high temperature

Diarrhoea

Hot skin can be either dry or moist

Agitation or lethargy

Convulsions or febrile seizures

Loss of consciousness

Problems can arise from babies becoming too hot in the sun too.

Sunburn
Toddler-on-beach

Your baby should never get sunburnt and sunbathing is not appropriate for the young delicate skin.

Nearly ALL the risk of adult skin cancers arise from sunburn when those adults were young children.

  • Babies skin is much more easily burned than adult skin.
  • Babies with light skin, light eyes and hair are the most susceptible, but babies with dark skin can also get sunburn.

In general:

  • Babies under 6 months shouldn’t spend time uncovered in hot, direct sunlight.
  • If your baby over 6 months of age will be going out in the sun, you need to apply a baby-friendly sunscreen/ stick at least 15 minutes before you go out in the sun.
  • Initial exposure for young babies should start with a few minutes to a maximum of around 20 minutes in direct sunlight.
  • Keep your baby in a wide-brimmed sun hat on summer days.
  • Avoid being out in the midday sun.
  • All-in-one SPF suits with inbuilt sun protection are great for water play outside.
  • You can’t see sunburn happening.
Heatstroke

The risk of heatstroke is much higher for babies than adults.

This is because:

  • They can’t tell you they’re too hot
  • Their internal temperature regulation systems aren’t developed

On hot days, make sure your baby isn’t wearing too many clothes, that they stay in the shade, and has plenty of fluid or water to drink (lots of breastfeeds should be offered in this weather if the baby is breastfed and make sure you keep yourself hydrated too).

In hot and sunny weather do:

  • Dress your baby in very light clothes
  • Keep them in the shade
  • Keep them really well hydrated with water, breastmilk or formula milk

In hot and sunny weather don’t:

  • EVER leave your baby in a car on a hot day, even with the windows open
  • carry your baby for too long in a sling in the sun
  • keep your baby in a pram or car seat in the direct sun
  • cover your baby’s pram with a blanket which can prevent air circulation and cause the temperature underneath to become dangerously high.

Heatstroke is potentially fatal for babies and you should take your baby immediately to A&E if they after the above conditions they have:

  • Fever or high temperature
  • Diarrhoea
  • Hot skin can be either dry or moist
  • Agitation or lethargy
  • Convulsions or febrile seizures
  • Loss of consciousness

Prickly heat

The symptoms of prickly heat (or milisria), include an itchy rash of small, red and raised spots that feel prickly, itchy or stinging. The rash can appear anywhere but it commonly occurs on your child’s face, upper torso, and thighs.

In adults, prickly heat usually occurs when we overheat and sweat. In babies, they can’t sweat properly yet so the glands become blocked and the sweat gets trapped under the skin.

Take your baby immediately to a cool place.

Watch for any of the symptoms of heatstroke as well.

Soothe prickly heat with calamine lotion and speak to your child’s doctor or pharmacist about using a hydrocortisone cream if the rash is sore and itchy.

When is the sun hottest?

As the saying goes,

Only mad dogs and Englishmen go out in the midday sun.

Bear in mind these facts about the sun:

  • Between 10am and 3pm, peaking at noon in midsummer.
  • The sun still comes through clouds on hot, cloudy days.
  • The sun bounces off snow, sand, and sea.
What sort of sunscreen should I buy?

High SPF, preferably 30-50 UVB and UVA rays screened out, look for this on the package. Ask your pharmacist for advice. If your baby has any allergies or is prone to eczema or asthma, they will be at increased risk of allergies to sunscreens. Always test out a tiny patch of skin first and see if there’s any reaction. Choose PABA-free, fragrance-free, colouring free, sunscreens for sensitive skins. For playing in the water, waterproof sunscreen is the best, followed by water-resistant. Look carefully at how often you need to reapply.

Sun safety and vitamin D deficiency

It’s really important that your baby gets enough Vitamin D between October and March (in the northern hemisphere) if you live in a temperate country as it’s not possible to get enough Vitamin D from the sun during these months. During the summer months, only a short amount of safe sun exposure is required to manufacture vital Vitamin D in your skin.

Here is a statement on Vitamin D from several UK research and charitable groups:

Vitamin D is essential for good bone health and for most people sunlight is the most important source of Vitamin D. The time required to make sufficient Vitamin D varies according to a number of environmental, physical and personal factors, but is typically short and less than the amount of time needed for skin to redden and burn. Enjoying the sun safely, while taking care not to burn, can help to provide the benefits of Vitamin D without unduly raising the risk of skin cancer. Vitamin D supplements and specific foods can help to maintain sufficient levels of Vitamin D, particularly in people at risk of deficiency.

  • British Association of Dermatologists
  • Cancer Research UK
  • Diabetes UK
  • Multiple Sclerosis Society
  • National Heart Forum
  • National Osteoporosis Society Primary Care Dermatology Society

DISCLAIMER
This article is for information only and should not be used for the diagnosis or treatment of medical conditions. Essential Parent has used all reasonable care in compiling the information from leading experts and institutions but makes no warranty as to its accuracy. Consult a doctor or other health care professional for diagnosis and treatment of medical conditions. For details click here.