Signs of dyslexia by age: what to look for and when to seek help
If you've reached this page by typing something like "how to know if my child has dyslexia", the first thing we want to say is that searching for this doesn't mean anything serious is happening. It's a question that a great many families ask themselves at some point, usually because something about their child's reading or writing doesn't quite match what they see in other children of the same age, or what the school is telling them. This guide is not a test or a diagnosis: it's a map of indicative signs, organised by age band, so you know what to observe with more context and, above all, when it makes sense to take the next step with a professional.
What this guide covers
Early years (ages 3-6)
At this stage it's normal for learning letters to be uneven between children, so the signs here are very subtle and only start to matter if they repeat clearly and persist over time.
They find it especially hard to link each letter to its sound, even after lots of practice and revision, more than seems usual among their classmates.
They confuse similarly shaped letters such as b/d or p/q frequently, something expected at ages 4-5 but that stands out if it stays just as intense as they approach 6.
They struggle to learn rhymes or to break words into syllables while playing, something that at this age usually starts to come with some ease.
Early primary (ages 6-8)
It's in these years, with the formal learning of literacy already under way, that many families start to notice that something is harder than expected.
They read slowly and hesitantly, with visible effort, while their listening comprehension (what they understand when read to aloud) is good for their age.
They keep confusing b/d/p/q beyond what is considered usual in the first and second years of primary school, or reverse the order of letters when writing simple words.
They avoid reading aloud or get frustrated quickly with reading tasks, in contrast to how they approach other school activities.
Upper primary (ages 9-12)
From the third year of primary school onwards, reading stops being the goal in itself and becomes the tool for learning every other subject. Here, according to Sanitas, one of the most characteristic signs is difficulty with reading comprehension, even though the child has already learned to decode the words.
They read the words correctly but struggle to explain what the text was about, because all their energy goes into deciphering each word and little is left to understand the whole.
They keep making persistent spelling mistakes in words they have already practised many times, beyond the occasional slips that are normal at this age.
They take much longer than their classmates to finish reading tasks or dictations, and that gap starts to show in subjects like social or natural sciences too, which depend heavily on reading well.
Secondary school (ages 12+)
In secondary school, once there are years of their own compensation strategies in place, the signs tend to be more subtle but also more visible in overall performance.
They avoid reading long texts whenever they can and clearly prefer spoken explanations or videos, even though their comprehension when listening is good.
They keep making spelling or organisation mistakes when writing essays, despite a rich spoken vocabulary and a good grasp of the subject's concepts.
The effort reading costs them doesn't match their level of listening comprehension or their ability in other areas, something the teenager themselves often notices before the family does.
Important: this guide is not a diagnostic checklist. No child needs to show all of these signs to have dyslexia, and showing one of them occasionally doesn't necessarily mean they have it. They are only reference points to observe more calmly and with more context.
This is not a diagnostic checklist
It's worth repeating in other words: dyslexia can only be assessed by a professional, taking into account the child's full history, their environment, their language development and specific tests. No online list, however complete, replaces that assessment. What a list like this can do is help you put into words something you may already have sensed, and give you more confidence to take the next step.
What to do if several signs coincide
If, reading the sections above, you have recognised several signs that repeat and persist over time, the most useful thing is not to keep searching for more lists, but to start talking to the people who can genuinely help:
- The class teacher at school, who sees your child every day and can share their own observations in the classroom, as well as trigger the school's internal protocols if there are any.
- The paediatrician, as the first point of healthcare contact, who can offer guidance and refer on if they consider it necessary.
- A speech and language therapist or an educational psychologist, specialists trained specifically to assess literacy difficulties and, if appropriate, carry out a full evaluation.
The sooner this conversation begins, the sooner the situation can be clarified, and that in itself usually eases the family's uncertainty a great deal, whether or not it ultimately turns out to be related to dyslexia.
While the assessment is being sorted out, practising at home does help
Booking an appointment, waiting for an assessment or coordinating several professionals takes time, and in that in-between period many families feel there's nothing they can do but wait. That's not the case: although it doesn't replace any diagnosis, having a reinforcement workbook at home tailored to the child's exact age lets you keep practising literacy in a kind way, without pressure and without pre-empting what the specialist will say. At Zubibook you can generate one in minutes, adapted to age and language, so you have something to work with at home right away.
This article offers general information and support activities. Zubibook is not a healthcare provider or an accredited educational institution: it does not replace the diagnosis or follow-up of a professional. If you have any doubt about a child's development, consult a specialist.
Remember: the signs in this guide are indicative and do not constitute a diagnosis. Only a speech and language therapist, educational psychologist or paediatrician can assess the specific case of your child or pupil.
Next step
If some of these signs feel familiar, the most useful step right now is to talk to the school or to a professional, without rushing but without letting too much time pass. And if in the meantime you'd like to have reinforcement material ready to practise at home, at Zubibook you can create an activity workbook tailored to your child's age and language in just a few minutes.
Create a reinforcement workbook tailored to your child
Choose age, difficulty and language and generate a print-ready PDF activity workbook in minutes.