Strawberry Marks (Infantile Haemangiomas): What They Are and What to Expect

A red, slightly raised mark appears on a four-week-old baby. It wasn't there at birth, or barely was. It grows visibly week to week. Most parents in this situation are told the same reassuring thing: it's a strawberry mark, the vast majority cause no problem, and they shrink down on their own over years. The minority that do warrant treatment — because of where they are or what they're doing — have excellent outcomes with modern medication. Knowing the natural history and the small list of features that warrant a specialist eye is most of what's useful here. For a comprehensive overview, see our complete guide to child health. Healthbooq covers infant skin and vascular birthmarks.

What They Are

An infantile haemangioma is a benign overgrowth of blood vessels in the skin — endothelial cells (the cells lining blood vessels) proliferating rapidly during infancy and then, less rapidly, regressing. They're tumours in the strict sense (an abnormal mass of cells), but benign and self-limiting.

The clinical types:

• Superficial. Bright red, raised, with the classic "strawberry" lumpy surface. The most recognisable form.
• Deep. Sit under the skin; the overlying skin may look normal or have a faint bluish tinge. Often picked up later because the surface clue is subtle.
• Mixed. A superficial component above and a deep component below — the most common combination on examination.

About 4–5% of infants develop one. More common in girls than boys (around 3:1), in premature babies, in low-birth-weight babies, in twins and triplets, and in white-skinned infants. Most babies have one; some have several.

Three things to clearly distinguish from infantile haemangioma:

• Salmon patches (stork bites/angel kisses). Flat, faint pink areas at the nape of the neck, the eyelids, between the brows. Very common (around 30–40% of newborns). Typically fade in the first one to two years.
• Port-wine stain. Flat, deep red or purple, present at birth, doesn't fade or grow significantly. Different lesion entirely; warrants specialist review, particularly facial port-wine stains in the V1 (forehead/upper eyelid) distribution because of the Sturge-Weber syndrome association.
• Congenital haemangiomas (RICH/NICH). Fully formed at birth and either rapidly involuting (RICH) or non-involuting (NICH). Different natural history — important to distinguish at the first visit.

The Predictable Timeline

Knowing what's coming next is most of the parental work here.

Week 1–4. Often nothing visible, or a faint pale precursor area, sometimes a little tangle of fine vessels (telangiectasia), occasionally an area that looks bruised or pinkish.

Week 4 – month 3. This is the rapid growth phase. The mark gets bigger, redder, and often more raised — and this is the part that prompts most parents to phone the GP. By 5–8 weeks, parents are sometimes watching it appear to grow daily, which is alarming until you know it's the expected behaviour.

Months 3–5. Most haemangiomas reach their maximum size in this window. The roughly 80% rule: by five months, four in five have hit their peak. A small minority continue growing up to nine or twelve months.

Months 5+. Plateau, then slow involution. The colour changes first — bright red shifts to a duller red, then greyish, then progressively paler. The raised surface flattens. The middle often fades first, leaving a "doughnut" appearance for a stretch.

Years 1–10. Steady fading. Approximate trajectory:

• ~50% have largely involuted by age 3
• ~70% by age 5
• ~90% by age 10

About half leave no visible residual mark at the end of involution. The other half leave some residual change — a pale fibrofatty patch, faint surface vessels, occasional loose skin where a large haemangioma sat. On the face, residual changes can be cosmetically meaningful and are sometimes treated with laser later in childhood.

The most useful thing parents can do during the growth phase is photograph it monthly with a tape measure for scale. The growth is hardest to assess by eye day-to-day; comparison photos are how the GP and the dermatologist judge whether it's behaving as expected.

When It Doesn't Need Treatment

Most haemangiomas do not. Specifically:

• Small, in a non-critical location, growing predictably
• Not on or near the eye, lip, nasal tip, ear, or genitals
• Not segmental (covering a large area in a developmental pattern)
• Not ulcerating
• Not impairing function in any way

For these, the management is active monitoring: a GP visit to confirm the diagnosis, reassurance about natural history, and a plan for follow-up if the picture changes. Photos every month or two help the GP see the progression at the next visit.

When It Does Need a Specialist

Refer-on indications, urgency varying by feature:

Urgent:

• Periocular haemangiomas (near or on the eyelid). Even a small lesion here can cause amblyopia (lazy eye) by obstructing the visual axis or pressing on the developing eye. Time-sensitive.
• Airway haemangiomas suggested by a beard-distribution facial pattern, or a hoarse cry, stridor, or breathing difficulty in a baby with a facial haemangioma. Same-day assessment.
• Ulceration within a haemangioma — the open area, often with white slough at the centre, is painful, prone to bleeding, and usually warrants treatment to settle.

Routine but prompt:

• Lip, nasal tip, ear, eyelid, genitalia. These locations risk both functional and cosmetic complications during involution, so early specialist input is preferred.
• Large or segmental facial haemangiomas. May be part of PHACE syndrome (a constellation including posterior fossa anomalies, large facial haemangioma, arterial anomalies, cardiac defects, eye anomalies). Imaging may be indicated.
• Multiple haemangiomas (more than five). Sometimes associated with internal haemangiomas — most commonly liver — needing ultrasound to check.
• Lumbosacral midline haemangioma. May be a marker for occult spinal dysraphism; ultrasound or MRI of the spine warranted.
• Large haemangiomas in the nappy area, skin folds, or under chin. High risk of ulceration.

Generally manageable in primary care after diagnostic confirmation:

• Small, scalp, trunk, limbs
• Slow-growing, away from sensitive structures
• Behaving as expected on the standard timeline

Treatment

The first-line treatment for haemangiomas needing intervention is oral propranolol, a beta-blocker. Its serendipitous discovery as a haemangioma treatment in 2008 — when a child given propranolol for cardiac reasons had a dramatic shrinkage of a coexisting haemangioma — has transformed the field. Where ten years ago the option was high-dose steroids or surgery, propranolol now achieves excellent outcomes for most.

How it's used in practice:

• Started in specialist clinic (paediatric dermatology, paediatrics, or plastic surgery, depending on local pathway). The first dose is usually given with a few hours of monitoring because the relevant side effects — hypoglycaemia, slow heart rate, bronchospasm — are uncommon but real.
• Titrated to a maintenance dose based on weight; the dose is recalculated as the baby grows.
• Continued for several months, often six to twelve months, until growth is firmly halted and involution well underway. Tapered off.
• Side effects to watch for: sleep disturbance, cool extremities, occasional rash, low blood sugar particularly during illness or fasting (parents are taught to give doses with feeds and to seek medical review during any illness with reduced feeding).

For specific situations, timolol gel (a topical beta-blocker) is sometimes used for small, superficial haemangiomas. Laser therapy is used at later stages for residual telangiectasia. Surgery is now uncommon as first-line, mostly reserved for residual fibrofatty tissue after involution.

Ulceration: The Common Complication Worth Knowing About

Up to 1 in 10 haemangiomas ulcerate, particularly in moist or friction areas — the lip, nappy area, neck folds, behind the ear. The ulceration is painful, can bleed, and risks scarring even after the haemangioma has settled.

If you spot a raw, oozy, or whitish patch developing in a haemangioma — particularly with crying when the area is touched — get it seen. Treatment usually combines:

• Wound care: gentle cleaning, paraffin-based ointment as a barrier, occasionally hydrocolloid dressings
• Pain relief
• Treating any infection: topical or oral antibiotics if needed
• Starting propranolol to accelerate the underlying lesion's resolution

Ulceration is the single commonest reason for treating an otherwise watch-and-wait haemangioma.

What to Photograph and What to Ask

When you go to the GP with a new haemangioma:

• A photograph at each visit, with a ruler or coin for scale, is genuinely useful. Phone camera is fine; consistent lighting and angle helps.
• Note the date you first noticed it (or when it became more prominent).
• Ask about referral if it's near the eye, on the lip, on the nasal tip, on the ear, segmental on the face, or in a high-risk ulceration area.
• Ask for confirmation of the diagnosis if there's any doubt — the differential includes port-wine stain, congenital haemangioma, and rarer vascular lesions, each of which has a different course.

The summary worth holding: most strawberry marks are a phase that resolves itself — sometimes the cosmetic worst of it lasts a year or two, but the underlying lesion is benign, the natural history is predictable, and modern treatment for the minority that need it is highly effective. The active job of parenting one is photographing the trajectory and bringing the small list of red-flag features to attention promptly.

Infantile haemangiomas — strawberry marks — are the commonest vascular tumours of infancy, appearing in around 4–5% of babies, more often in girls, premature, and multiple-birth babies. They usually aren't visible at birth (or show only as a faint pink area), grow fastest between one and three months, plateau by three to five months, then slowly shrink and fade over years. About half are gone by age three, 70–90% by age ten. Most need nothing more than reassurance and a few photos for the records. The minority that need treatment do so for one of three reasons: location (eye, lip, nasal tip, ear, large/segmental face), size with risk of internal involvement, or ulceration. First-line treatment is oral propranolol, started under paediatric specialist supervision — and it has transformed outcomes for the small number of haemangiomas that do need intervention.