Signs of dyslexia at every age

Early signs of dyslexia in preschool

Dyslexia is about reading, so it may seem odd to look for it before a child can read. But the skills reading is built on develop earlier, and research shows that weaknesses in them can be seen before formal reading instruction starts. The early markers most often reported are weak phonological awareness, slow rapid naming of familiar things, slow learning of letter names and sounds, and a family history of dyslexia.

Family history matters most. In a meta-analysis, about 45% of children with a parent or sibling with dyslexia went on to have it themselves, and as a group those children showed weaker language and speech-sound skills in the preschool years. If dyslexia runs in your family, it is worth watching these skills and playing sound games early, without assuming the outcome.

At this age, signs are best treated as a reason to play more with sounds, rhymes and letters, not as a label. Many young children who find rhymes tricky at 4 catch up by 6. Our pre-K word lists and rhyming words are an easy place to start.^2,3,4,5

• Finds it hard to learn nursery rhymes or to tell which words rhyme
• Mixes up the sounds in longer words ("aminal" for animal) for longer than peers
• Struggles to learn and remember the names of letters, even those in their own name
• Is slow to name familiar things such as colours or objects, and often searches for words
• Has a parent or sibling with dyslexia or reading difficulties
• Had late or unclear speech, or shows little interest in letter games

Dyslexia symptoms in kindergarten to 2nd grade

Kindergarten to 2nd grade is when most children crack the letter-sound code, so this is when signs of dyslexia usually become clear. The key question is not whether a child makes mistakes (all beginners do) but whether letter-sound learning and sounding out are unusually slow despite good teaching.

A useful sign is how the child reads words they have never seen. Children with dyslexia often guess from the first letter or the picture, or read a familiar word that looks similar ("house" for "horse"). Made-up words such as "vop" or "blint" are especially hard, because they cannot be recognised from memory and have to be decoded. Our nonsense words list shows what that kind of practice looks like.

Reversing letters such as b and d is common in every young reader and usually fades as letter-sound links become secure in the first years of school. It is not on its own a sign of dyslexia; persistent difficulty linking letters to sounds is.^6,4,7

• Still unsure of many letter sounds by the end of kindergarten
• Cannot blend sounds into short words such as c-a-t, or split a word into its sounds
• Guesses words from the first letter or the picture instead of sounding them out
• Reads a word correctly on one page and fails to recognise it on the next
• Spells the same word differently each time, or spells words in ways that do not match their sounds
• Becomes upset, tired or avoidant at reading time, while enjoying being read to

Signs of dyslexia from 3rd grade and in the teens

From around 3rd grade, schoolwork shifts from learning to read to reading to learn. Children with dyslexia who have learned to decode may now read accurately but slowly, so long texts, instructions and tests become the pressure point. Spelling often stays the weakest skill, and written work falls well below what the child can say aloud.

Slow reading has a strong link with rapid naming speed. Naming speed predicts reading fluency, but practising naming on its own does not improve reading, so the answer is more practice with real reading rather than speed drills.

In the teen years, signs often look like avoidance or low effort: leaving reading to the last minute, relying on listening in class, or being unusually tired after reading. Many teenagers have developed clever ways of coping that hide how much effort reading takes. Some of the same signs apply to adults; see our page on dyslexia in adults.^5,7,8

• Reads accurately but much more slowly than classmates, and tires quickly
• Avoids reading aloud and rereads passages to understand them
• Spelling stays weak even for common words; written work is short or hard to follow
• Struggles with long words, new vocabulary in science or history, and foreign languages
• Understands and discusses ideas well but underperforms in timed or written tests
• Frustration, low confidence or a belief of being "not clever" around schoolwork

Dyslexia symptoms by age: a quick table

Use this table as a summary. One or two signs are common in every child; what matters is a pattern of several signs that lasts over months despite good teaching.^2,7,5

Signs that look like dyslexia but may be something else

Some reading difficulties have other causes, and a good assessment checks for them. Hearing problems, including repeated ear infections, can make speech sounds hard to hear. Vision problems can make reading uncomfortable, so an eye test is sensible if a child complains of blurring or headaches, although dyslexia itself is not a vision problem. Missed or inconsistent teaching, or learning to read in a second language, can also slow progress.

Dyslexia also often comes with other difficulties. Reading disability and ADHD often co-occur; in one large study roughly a quarter to two-fifths of children with one also had the other. Reading and maths difficulties also appear together more often than chance, which our page on dyslexia and dyscalculia explains.^9,10,11,8

When to get help for dyslexia symptoms, and how the free test fits

It is worth acting when several signs from your child's age group persist for a few months despite regular teaching, when your child is falling clearly behind classmates, or when reading is causing distress. There is no benefit in waiting for a child to fail: early help works best, and extra phonics practice does no harm to a child who turns out not to have dyslexia.

A good first step is the free Dyslexia Steps screening test: six short games in about 8 minutes, for children aged 5 to 12 with a parent nearby. It checks sound awareness, letter-sound knowledge, decoding, rapid naming, look-alike letters and short-term memory, and gives a skills profile with a clear note on when to ask for an assessment. It is a screening and cannot diagnose dyslexia.

Then talk to your child's teacher or school, bring your notes and the test profile, and ask what support and assessment are available. Our guides on how dyslexia is diagnosed and school support walk you through the next steps.^2,12