Baby rashes: a guide to the most common types
A new spot, patch or flush on your baby's skin can feel alarming, especially in the early weeks when everything still feels unfamiliar. The good news is that the vast majority of infant rashes are harmless and resolve on their own. This guide, drawn entirely from NHS guidance, walks through the most common types so you know what you are looking at and, crucially, which signs mean you should seek help right away.
Know the warning signs that need urgent attention
Before looking at individual rash types, it is worth knowing the signs that always require an immediate call to 999 or a trip to A&E, regardless of what the rash looks like:
- A stiff neck alongside the rash
- Sensitivity to light
- Confusion or unusual drowsiness
- Difficulty breathing
- Skin that looks pale, blue or blotchy
- Swelling around the throat
- Small bruise-like spots or bleeding under the skin that do not fade when you press a glass firmly against them. This last sign in particular should prompt an immediate call to emergency services.
If any of these are present, do not wait to see whether things improve.
Rashes that are normal in newborns
Several rashes appear in the very first weeks of life and are simply a sign of your baby's skin adjusting to the world outside the womb.
Milia
Milia are very small spots, most often appearing on a newborn's nose and face. They are not sore or itchy and need no treatment. Most clear up on their own within a few weeks.
Erythema toxicum
This is a blotchy rash of red, yellow and white spots that can appear in the first couple of weeks after birth. Despite looking quite dramatic, it is completely harmless and should settle within a few weeks without any intervention.
Baby acne
Small pimple-like spots can develop on a baby's face up to six weeks after birth. No treatment is needed and the spots will clear on their own.
Cradle cap
Cradle cap shows up as greasy, scaly skin on the scalp, often with white or yellow-tinted patches. It looks unsightly but it is not harmful or contagious. Gentle massage with an emollient, followed by a soft brush and baby shampoo, can help loosen the flakes.
Rashes linked to nappies and heat
Nappy rash
Nappy rash is one of the most common skin concerns in babies. Affected skin looks red or raw, may feel hot and sore to the touch, and can sometimes appear dry and scaly. The key to managing it at home is keeping the area as dry as possible: change nappies frequently, allow some nappy-free time where practical, and ask a pharmacist about a suitable barrier cream. If the rash does not improve or seems to be getting worse, speak to your GP or health visitor.
Heat rash
When a baby gets too warm, small raised spots can appear, often with an itchy or prickly sensation. Cooling the skin down, avoiding scratching and applying a cool compress usually brings relief. Ensuring the room is not too warm and that your baby is not over-dressed helps prevent it from returning.
Itchy rashes that may need treatment
Eczema
Eczema causes skin that is itchy, dry and cracked. It commonly appears on the knees, elbows and neck, though it can affect any part of the body. If you think your baby may have eczema, see your GP for a proper diagnosis and a management plan, as treatments vary depending on severity.
Hives
Hives appear as raised, itchy patches or spots that can come on quickly. In most cases they settle without treatment, but if you notice any swelling around your baby's lips or throat, or any difficulty breathing, call 999 immediately as this can indicate a severe allergic reaction.
Ringworm
Despite the name, ringworm has nothing to do with worms. It is a fungal infection that causes a ring-shaped or oval itchy patch on the skin. Antifungal treatment from a pharmacist or GP is needed and may need to be continued for up to four weeks to clear the infection fully.
Scabies
Scabies causes intense itching, particularly at night, and produces raised lines on the skin with a small dot at one end where a mite has burrowed in. It is very infectious, so if you suspect scabies, contact your GP. Treatment involves a cream or lotion applied to the whole body, repeated after seven days.
Impetigo
Impetigo produces sores or blisters that burst and leave crusty, golden-brown patches on the skin. It is contagious and requires treatment, so speak to your GP if you think your baby may have it.
Rashes that come with a high temperature
Several childhood illnesses cause a rash as part of a wider picture that often includes fever. These are worth knowing about, though most do not affect babies in the very first months of life.
Slapped cheek syndrome
This infection produces a bright red rash on the face, along with a high temperature, runny nose, sore throat and headache. The facial rash typically fades within one to three weeks. Rest, fluids and age-appropriate pain relief are the usual approach, and most children recover at home.
Hand, foot and mouth disease
Mouth ulcers together with a raised spotty rash on the hands and feet are the hallmarks of this illness. It generally clears up on its own within seven to ten days. Cool fluids, soft foods and appropriate pain relief can help with comfort in the meantime.
Chickenpox
Chickenpox begins with small spots that develop into blisters and then form scabs. Children are generally considered contagious until all the spots have crusted over into scabs, which usually takes around five days from when the rash first appears. It is important to keep your baby away from newborns and from anyone who is pregnant, as chickenpox can be more serious for these groups.
Scarlet fever
Scarlet fever causes a rash made up of small, raised bumps that feels rough to the touch, similar in texture to sandpaper. It usually comes alongside a high temperature, sore throat and swollen glands in the neck. Contact your GP if you think your baby or child may have scarlet fever.
Measles
Measles starts with cold-like symptoms, followed by the rash a few days later. A distinctive sign is the presence of small white spots inside the mouth, and the rash itself begins on the face and behind the ears before spreading further. Contact your GP immediately if you suspect measles.
When to speak to your GP or pharmacist
Not every rash needs an urgent appointment, but it is always worth getting advice from a pharmacist or GP if:
- You are unsure what the rash is
- The rash does not improve after a few days of home care
- Your baby seems unwell in other ways, such as being unusually irritable, off feeds or running a temperature
- The rash is spreading rapidly or changing in appearance
Your health visitor is also an excellent first port of call for questions about common skin conditions in babies and young children.
Frequently asked questions
When should I call 999 about a rash on my baby?
Call 999 or go to A&E immediately if a rash appears alongside a stiff neck, sensitivity to light, confusion, difficulty breathing, pale or blue or blotchy skin, swelling of the throat, or small bruise-like spots or bleeding under the skin that do not disappear when you press a glass against them. Do not wait.
What causes milia in newborns?
Milia are very small spots that commonly appear on a newborn baby's face, often on the nose. They are harmless and usually clear on their own within a few weeks without any treatment needed.
Is nappy rash serious?
Nappy rash is very common and is usually managed at home by changing nappies frequently, keeping the area dry and using a pharmacist-recommended barrier cream. If the rash does not improve or spreads, speak to your GP or health visitor.
Do I need to treat baby acne?
Baby acne can appear up to six weeks after birth but does not need treatment. It clears up on its own in time.
How long does erythema toxicum last?
Erythema toxicum is a common newborn rash showing red, yellow and white spots that appears in the first weeks of life. It should resolve within a few weeks without any treatment.
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