Published by Bupa's health information team, November 2008.
This section contains answers to common questions about this topic. Questions have been suggested by health professionals, website feedback and requests via email.
Not usually. However, some birthmarks may lead to complications which could be painful.
If a strawberry mark becomes infected or bleeds then it may become painful. Some strawberry marks can grow very large and ulcers may form. These can be painful and your child may need medicines to relieve this. If you are concerned about your child's birthmark, it's important to see your GP.
If you have a port wine stain, it may become raised and bumpy as you get older. These bumps will be more prone to bleeding if scratched and the bleeding will take longer to stop.
It depends on the type of birthmark you have and how it develops.
If strawberry marks become infected or traumatised you may end up with scarring of the skin in later life. If you have a congenital melanocytic naevus, it may slightly increase your risk of developing the type of skin cancer called melanoma. The chance of this happening may be as little as one in 100.
If you have a birthmark of any type, but particularly if you have a congenital melanocytic naevus, you should make sure you use appropriate protection when you are out in the sun.
Yes, although there is a chance that if you have a port wine stain it may return later on.
In a significant number of cases laser treatment can reduce the intensity of the mark, although there is a chance the mark will return when the child reaches puberty.
Laser treatment for port wine stains can be carried out at any age, although it's usually best to start it as early as possible - the younger the child is when treatment begins the better.
You will usually have either a local or general anaesthetic before treatment to minimise the discomfort. Local anaesthesia completely blocks feeling from the area and you will stay awake during the operation. General anaesthesia means you will be asleep during the operation and feel no pain.
You are likely to have some discomfort after laser treatment and you may have a bruise in the short term.
No, a birthmark is just something that happens when some babies are developing.
The exact reasons why some babies develop birthmarks aren't fully understood at present. Birthmarks can't be prevented and it's not your fault if your child is born with one.
Yes, more people than you might think have a visible birthmark and most of them lead a normal life.
Although growing up with a birthmark may produce challenges for a child, most will cope without experiencing any major problems. Much can depend on the attitude of the parents in building up their child's confidence and self-esteem.
There are a number of support groups which can offer advice and support. Some of them run mentoring programmes for children growing up with a birthmark.
This information was published by Bupa's health information team and is based on reputable sources of medical evidence. It has been peer reviewed by Dr James Quekett Bsc MBChB MRCGP DRCOG DFFP, General Practitioner (GP) and GP Appraiser, and by Bupa doctors. It has been patient reviewed by the Birthmark Support Group. The content is intended for general information only and does not replace the need for personal advice from a qualified health professional.
Publication date: November 2008.
Visit the birthmarks factsheet for more information.