What Is Dyslexia? Signs, Causes and How It Is Assessed

What is dyslexia? Dyslexia is a common learning difficulty that mainly affects reading, spelling and writing. It does not affect intelligence. It is lifelong, but with the right assessment and support, children and adults with dyslexia can learn, work and succeed.

Many parents first ask "what is dyslexia?" when their child works hard but still struggles to read. Teachers notice it in the classroom, and many adults only recognise it in themselves years later. This guide explains the signs at different ages, what causes dyslexia, and how a professional assessment can help.

What Is Dyslexia?

The NHS describes dyslexia as a common learning difficulty where the brain works differently to most people. It mainly affects reading and writing, and it does not affect intelligence. Many people with dyslexia are strong in creative thinking, problem-solving and verbal reasoning.

Dyslexia exists on a spectrum. Some people have mild difficulties, while others find reading and spelling very hard. There is no cure, but the right teaching methods and tools make a big difference.

Common Signs in Young Children

• Late speech or difficulty learning new words

• Mixing up the order of sounds in words, for example "aminal" for "animal"

• Difficulty learning nursery rhymes or recognising words that rhyme

• Trouble learning letter names and the sounds they make

• Little interest in letters or books compared with other children

Signs in Older Children and Teens

• Reading slowly and with a lot of effort

• Spelling the same word in different ways

• Confusing letters that look similar, such as b and d

• Finding it hard to follow several instructions at once

• Understanding a topic well in conversation but struggling to write it down

• Avoiding reading aloud, and feeling tired or frustrated after homework

Children with dyslexia are often described as bright but underachieving. Without support, some lose confidence or start to dislike school.

Dyslexia in Adults

Some adults were never assessed as children. They may read slowly, avoid writing emails or reports, find forms stressful, or rely on others to check their spelling. Many have developed clever strategies to cope. A diagnosis in adulthood can explain years of frustration and open the door to practical support at work or in further study.

What Causes Dyslexia?

Dyslexia is linked to differences in how the brain processes language, especially the sounds that make up words. It often runs in families, so a child with a parent or sibling with dyslexia may be more likely to have it. Dyslexia is not caused by poor teaching, lack of effort or low intelligence.

Some children also have other learning differences, such as ADHD, dyscalculia (difficulty with numbers) or dysgraphia (difficulty with handwriting). An assessment can help separate these and show the full picture.

How a Dyslexia Assessment Works

A dyslexia assessment is carried out by a qualified psychologist. It usually looks at reading, spelling and writing skills, how the child processes the sounds in words, memory and processing speed, and general learning ability. Information from parents and teachers is also important.

Many specialists prefer to assess a child once they have had a year or two of reading instruction, so that the results are reliable. If you are worried earlier, a psychologist can still advise you on what to watch and how to help at home.

Online dyslexia tests can be a useful first step, but they cannot give a diagnosis. A full assessment explains why reading is difficult and what will help.

Support at School After Diagnosis

After the assessment, families receive a written report with clear recommendations. Schools can use it to put support in place, such as extra time in tests, structured reading programmes, assistive technology or adjusted homework. At ClearMinds Center, a psychoeducational assessment can also look at attention, maths and writing, so your child gets support that fits their needs.

How Parents Can Help at Home

Whether or not your child has been assessed yet, there is a lot you can do to support reading and protect their confidence at home.

• Read together every day, taking turns and keeping it relaxed rather than a test.

• Play sound and rhyming games, such as finding words that start with the same sound.

• Use audiobooks so your child can enjoy stories at their level of understanding, not only their reading level.

• Praise effort and progress, not only results.

• Keep in close contact with your child's teacher and share what works at home.

Above all, remind your child that dyslexia is not about being clever or not. It is simply a different way of learning.

Key Takeaways

• Dyslexia is a common learning difficulty that mainly affects reading, spelling and writing.

• It does not affect intelligence, and many people with dyslexia have strong creative and verbal skills.

• Signs change with age, from difficulty with rhymes and letter sounds to slow reading and spelling problems.

• Dyslexia often runs in families.

• A professional assessment explains the difficulties and gives the school clear recommendations.