The Hemiplegia Handbook: For parents and professionals
By Liz Barnes and Charlie Fairhurst
()
About this ebook
Until now there has been no book giving an overview of childhood hemiplegia for the people who are most affected by it - the children and young people themselves, and their parents, families, friends and teachers, as well as the professionals working with them on the management of their condition. This highly accessible guide provides this overview, giving the background to how and why hemiplegia happens in children, outlining the different approaches to therapy, and setting out guidance on how to support the child or young adult with hemiplegia. It is practically orientated, answering many of the questions posed by families, carers and members of the interdisciplinary team involved with the children. It will be invaluable both for parents and for medical and allied professionals. The chapters each cover one topic, moving from the causes, consequences and management of hemiplegia through the various life stages, including family life, education and growing up. Parents and professionals will dip into the handbook again and again as the child grows and his or her needs change. Readers will also find contact details for the many organizations that can provide more information or assistance. Throughout, the book is illustrated with the personal experiences of people - both parents and young people themselves - who have met the challenges of living with hemiplegia.
Liz Barnes
Liz Barnes is a trustee of HemiHelp and an award-winning radio journalist who for many years combined working for the BBC World Service with writing and editing much of HemiHelp’s information material. She is a lay member of the NICE Guideline Development Group on Spasticity in Children and Young People. Liz lives in London with her husband and her son, now an adult, who was born with hemiplegia.
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The Hemiplegia Handbook - Liz Barnes
UK
Chapter 1
Introduction
Liz Barnes
In the early 1990s, when he began his study of its causes and effects, Professor Robert Goodman described childhood hemiplegia as a ‘Cinderella’ condition. As recently as 2007 HemiHelp, the UK charity that provides support and information to people affected by the condition, had a letter from a man in his thirties who had only just discovered that he had hemiplegia while seeing his family doctor about something else. Even when it was diagnosed, hemiplegia was usually thought of as a mild physical disability, and families were left to get on with it with little or no support. And this was despite the fact that hemiplegia is quite a common condition, affecting about one child in a 1000.
Thankfully, things have moved on. Awareness of hemiplegia (also known as hemiparesis or hemiplegic cerebral palsy) in the medical professions has grown, and work by researchers around the world is adding to our knowledge of the condition. In particular, thanks to studies by Professor Goodman and others, people are much more aware that hemiplegia is not just a question of a weak arm and leg with, for some children, a few ‘associated conditions’, as they were referred to at the time, such as epilepsy, perhaps, or difficulties with some subjects at school. We now recognize it as a complex condition in which these hidden difficulties are not only more common than was realized previously but often have a more serious effect on the child’s life than the more obvious ones. In other words, with hemiplegia what you see is not what you get. It is not surprising that parents, in the early years, and later on the young people themselves, find themselves constantly having to explain hemiplegia to the world at large.
But now at least they have rather more sources of information to refer to. In 1990 a handful of parents whose children had taken part in Professor Goodman’s study set up HemiHelp as a support group to try to help others in the same situation. My son was too young to be included in the study, but I joined the group a year or so later. Since then I’ve been closely involved in writing and editing HemiHelp’s information materials, which cover a wide range of practical issues from bikes to benefits and from shoelaces to Statements of Special Educational Needs. HemiHelp members tell us that they find these very helpful, especially now that they can be downloaded from the charity’s website. However, I have felt for many years that it would be useful to have a book that would give a fuller picture of hemiplegia, its causes and effects and how to get on with living with it – whether you are a person with the condition, a family member, or a teacher or other professional working with children with hemiplegia. And now it has happened. This is in fact the second book on the subject to be published in the UK, but the first, Congenital Hemiplegia,¹ is aimed at medical professionals and can be a hard read for anyone else.
Of course, no book can tell the reader everything, but my co-author, Dr Charlie Fairhurst, and I have tried to cover all the main areas. As part of the preparation for writing this handbook, HemiHelp carried out a survey of its parent members, and asked them, among other things, what they would like to see in it. About a quarter of parent members completed the survey, and from their answers it became clear that it was important for parents to know as much as possible about their child’s condition, as the more they knew, the better prepared they would be to fight for the best possible help and support for him or her.
Each chapter of this handbook covers one subject, broken down into sections on different aspects and how they relate to children of different ages, from babies to teenagers and beyond. So parents, teachers and other professionals can dip into the handbook again and again as a child grows and their needs change. They will also find contact details for the many organizations that can provide more information, or help with complex matters such as applying for financial benefits or getting a Statement of Special Educational Needs. There are references, too, to information sheets, downloadable from the HemiHelp website (www.hemihelp.org.uk/hemiplegia/publications/leaflets/), that cover individual topics in greater detail than there is space for here. And, since one of the most valuable things that people can have as they meet the challenges of living with hemiplegia is other people’s personal experience, we have also included stories and suggestions from parents, as well as young people and adults who have grown up with the condition. Many thanks to all of them for their contribution, and to everyone who completed the survey as well as parents who sent us photographs to illustrate the book.
Most childhood hemiplegia is what is known as congenital (in other words, it developed before or around the time of the child’s birth), so much of the handbook assumes that this is the kind of hemiplegia we are talking about. Of HemiHelp family members, 80% have a child whose condition is congenital; the other 20% have a child who ‘acquired’ his or her hemiplegia later in childhood as the result of an accident or illness, and we have included a section on acquired hemiplegia, as this is known (see Chapter 4). However, most of the information contained in the handbook is equally useful for both types.
Although there are children with hemiplegia in every country, approaches to treatment and provision of services differ around the world, and for want of space we have had to aim this handbook mainly at readers in the UK. Even here, although health, social and education services are broadly similar throughout the UK, there are local differences in both how they are organized and what they are called, and we have tried to reflect this in the relevant chapters.
This handbook is also coming out at a time when significant changes are planned for the National Health Service, the benefits system and the support our children will receive during their education. So some of what is written here may be out of date before you read it. For this reason we have set up a dedicated page on the HemiHelp website for corrections and updates, and refer our readers to this in the relevant sections.
A word about labels: medical professionals use a number of names when they diagnose this condition: hemiplegia, hemiparesis, ‘hemiplegic cerebral palsy’ or sometimes just cerebral palsy. Many parents are unhappy about using this last name, especially if their child’s hemiplegia seems mild. Others find it useful as a label because everyone has heard of it – I have sometimes said that my son has a sort of mild cerebral palsy, or talked about him having had a sort of stroke before he was born. Likewise, some parents are content to use the words ‘disabled’ and ‘disability’ when talking about their child, others not. Obviously this may depend on how mild or severe the hemiplegia seems. But, as parents, we can sometimes find ourselves using a word we would rather not use, either because it is easier to understand or because it seems useful at the time. When my son was diagnosed, his hemiplegia seemed fairly mild and mainly affected his arm, and when he went to a local mainstream playgroup I told just them that he had something called hemiplegia, which made his right arm and hand weak. Then, when he was about three and a half and ready for a primary school nursery class, I discovered that the school I had chosen had lost his application. The head teacher told me that they had no places left at nursery, and I knew that the same would be true of other local schools. I realized that I had one card up my sleeve, took a deep breath and said, ‘Well actually he has a mild disability and I think he needs to have time in nursery to get used to the hustle and bustle of school before reception class.’ I have never seen anyone’s ears prick up like that before or since – within a week he had a place. Since then I have realized that, sometimes, if we want help for our children, we have to use whatever means we can, and it is difficult to avoid using labels such as ‘disability’ or ‘cerebral palsy’. In the same way, a Statement of Special Educational Needs should be seen as an opportunity to get more help, not as a punishment. Remember that these are just labels and your child is always your child.
Bringing up any child is a voyage into the unknown – bringing up a child with a disability or additional needs even more so. The road ahead is less predictable, the challenges and obstacles greater, the anxieties deeper. But you need to remember that your child with hemiplegia is, first and foremost, a child like any other, and can grow up to lead a happy, useful adult life. We hope that this handbook will help you on your journey.
Note: All website information sheets, booklets etc., mentioned in this book are downloadable for free unless otherwise stated. References in this book to parents also apply to carers.
Footnote
¹ Congenital Hemiplegia, eds Neville B, Goodman R. London: Mac Keith Press; 2001.
Chapter 2
Understanding the brain and movement
Charlie Fairhurst
I really wanted someone just to tell us, properly, why this had happened to our son. Not to pretend we knew too much or too little, just to tell us straight in a way we could understand …
Steve, Ashford
Some people may find this chapter rather daunting, especially if their child has only recently been diagnosed with hemiplegia. However, to truly understand how to manage a problem we have to start at the beginning. You may prefer to come back to this chapter later, particularly the parts to do with early brain development.
In medicine, when we start thinking about how to deal with a problem with the human body we work from our knowledge of the basic science of how it works normally. Doctors spend years at medical school learning about the development, anatomy and workings of the brain. All this knowledge becomes useful only when it is finally put into clinical practice. A good, basic understanding of how the hugely complex brain and nervous system works is the bedrock of neurological management. It guides sensible practice and is the core of proper communication, not only between members of the medical team but most importantly between professionals, children and their families.
So that we can truly understand how to help children with what is at basis a neurological problem, this chapter starts with a guide to how the brain develops and works. This will help us to understand more about what happens when a child is affected.
The development of the nervous system (see Figure 2.1)
Development of the brain
We all start off in basically the same way. From the moment of conception, cells start to double rapidly until a ball of cells is formed – a morula. This ball travels down the fallopian tubes and starts to differentiate into an inner and outer core (a blastocyst), implanting itself into the lining of the womb about eight days after conception (all dates will be given as time after conception). The outer layer creates the placenta and membranes that a foetus needs for safe growth, and the inner ball of the blastocyst forms the embryo.
The ball starts to separate further into three layers, rather like a doughnut. The inner core (the jam or custard filling) is the endoderm, which goes on to make most of the organs of our body. The next layer (the dough) is the mesoderm, which makes the bones and muscles; and the outer layer (the deep-fried sugary coating) is the neuro-ectoderm, which makes the skin and nerves.
In the fourth week of development the ball begins to flatten out into a disc, keeping the three-layer system (like a squashed doughnut at the bottom of a shopping bag). One side of the outer neuro-ectoderm forms a neural plate, leaving the other side to create skin. This plate forms a neural groove down the middle and rolls up around itself into a tube – the neural tube, closing up along the back, up and down from the middle.
Soon afterwards the upper end of the neural tube gradually bends, flexes and wraps up on itself to form what is, by 11 weeks, a fairly recognizable brain-like structure, while the remainder becomes the spinal cord. From then on, specialization continues within the brain while development in the rest of the body catches up; the brain folds in on itself to form the convoluted surface, and new nerve cell (neuron) pathways and different supporting cell types continue to develop.
These pathways form from all parts of the brain down the spinal cord to all areas of the body, with restructuring, regression and organization into those seen in the mature brain occurring from around 24 weeks onwards.
When we are born the brain is more than 10% of our entire body weight, whereas by adulthood it is only 2%. At birth the brain is therefore comparatively large, but it does not stop developing. New cell types continue to be made, new nerve pathways come and go, the wiring of the nerve junctions becomes ever more complex, and myelin develops (fatty insulation of the electrical circuitry in the nervous system).
Because of all this, the brain that weighed about 350–400 grams at birth has increased to one kilogram by the time the baby is one year old, and by about two years of age its relative size, proportions and subdivisions are pretty similar to those of an adult. It is this massive growth of the brain after we are born that differentiates us from other mammals.
This period of rapid brain growth is a time of great risk for the development of neurological problems. Each structure in the nervous system has a period when it is particularly sensitive to the composition of the fluid surrounding the foetus in the developing womb. If constituents such as nutrients, growth factors and hormones are not present in the correct amounts at one of the critical points, or other things are present that should not be, then development can go wrong. One can see that it is a process fraught with the possibility of structures developing wrongly or pathways going haywire. Many of the earliest structural problems of the brain that lead on to congenital hemiplegia are the result of the development process going wrong.
Figure 2.1. The development of the nervous system.
Development of the blood supply to the brain
The development of the central nervous system is only half the problem, particularly in the context of this book. For the brain to function properly after birth, there needs to be an efficient way of getting energy, ‘building blocks’ and oxygen in and waste products out, i.e. an efficient blood supply is required. The development of the blood supply to the brain takes time and is fraught with its own risks.
The blood supply to the brain from the heart is split in two (See Figure 2.2). Half comes from the front of the head and flows back (through the internal carotid arteries), and half comes from the back of the head and flows forwards (through the vertebral arteries). In an embryo the development of the process to supply blood to the brain starts hand in hand with the development of the underlying structures of the brain, as outlined above. This begins towards the end of the first three months of pregnancy (the first trimester). However, at this stage the blood flow is poorly developed, and the foetus does not have the ability to keep things going independently of the mother’s placenta until at least the middle of the second trimester (about 24 weeks). Even then, the immature and fragile blood supply can be disrupted for a whole host of reasons, mostly as a result of chance rather than specific medical associations.
The arteries of the brain start forming at the front and back of the surface of the brain, creeping towards the centre and burrowing deeper. Thus, the blood supply to the middle of the brain is not fully formed by the middle of pregnancy, so the areas most at risk from problems caused by a lack of oxygen or energy are likely to be deep within the brain. These areas include the motor pathways – the corticospinal tracts – which coordinate our movements by relaying messages from the brain motor cortex down to the spinal cord and from there to the musculoskeletal system.
Loss of this blood supply providing energy and oxygen to the motor pathways on one side of the brain is therefore an important cause of congenital hemiplegia. However, the longer that the foetus continues growing in the womb, the less likely the motor pathways are to be affected by fluctuations in blood flow and energy supply, as the placenta buffers the system so well.
When the baby is ready to be born (i.e. at full term) most of the brain, especially the cortex (the outer layer), is pretty robust and at less risk from changes in blood flow, oxygenation and energy supply. However, around this time the deepest parts of the brain – the basal ganglia – are so active and energy-consuming that they become prone to damage if starved of oxygen and energy for a relatively short period, say 10–15 minutes. These, as we shall see, are also areas that are vital in managing motor control and coordination.
The developed nervous system
The workings of the nervous system can seem very complicated, so I will not go into a mass of detail here but will explain the basics.
The central nervous system
The central nervous system consists of the brain at the top and the spinal cord sending messages downwards from the brain to control movement and upwards to the brain with information from our senses. From the central nervous system, messages pass to our muscles and from our senses along smaller nerves – the peripheral nervous system.
At the age of 18 years the brain weighs about 1.275 kilograms in women and 1.36 kg in men. The brain itself is subdivided into three main functional areas (some would say five but to keep things simple we will stick to three). On the top, covered in folds and convolutions, is the cerebrum. This is partially split into two hemispheres – left and right. Underneath it sits the brainstem, and behind this at the base of the brain is the cerebellum.
Each of the hemispheres is then divided into four lobes, named after the bones that overlie them: the frontal, parietal, temporal and occipital lobes. Each of these has specific roles to play in our senses, thoughts, words and deeds. For example, there is a well-defined visual cortex (responsible for processing what we see), a sensory cortex (responsible for processing what we feel by touch) and a motor cortex (responsible for coordinating our movements; see Figure