The Lifelong Signs of Dyslexia

Here are the top 20 signs of dyslexia categorized by developmental stage.

Early Childhood Signs of Dyslexia (Preschool)

Even before a child picks up a book, their brain is hard at work developing phonological awareness—the ability to recognize and manipulate the sounds in speech. In children with dyslexia, these foundations may be shaky.

1. Delayed Speech Development

While every child reaches milestones at their own pace, a significant delay in starting to speak can be one of the earliest signs of dyslexia. Dyslexic children may take longer to find the motor patterns needed for speech or struggle to “map” sounds to meaning.

2. Persistent Pronunciation Issues

We all love “toddler talk,” but persistent “jumbling” of syllables—often called spoonerisms—can be signs of dyslexia. For example, a child might consistently say “aminal” instead of “animal” or “beddy-bye” for “teddy bear” well past the age where peers have corrected their speech.

3. Difficulty with Rhyme and Rhythm

Rhyming requires a child to break a word down into its component sounds (e.g., recognizing that cat and hat both end in -at). A child who shows zero interest in nursery rhymes or cannot identify the “odd one out” in a rhyming game may be struggling with the auditory processing necessary for reading.

4. Trouble Learning the Alphabet

Memorizing the alphabet song is one thing; recognizing the individual shapes of letters and connecting them to specific sounds is another. A preschooler who consistently forgets letter names or cannot associate the letter “B” with the “buh” sound may be showing early signs of dyslexia.

5. Word Retrieval Problems

Have you noticed your child frequently using vague terms like “stuff,” “thingy,” or “that one” because they can’t find the specific noun they want? This difficulty with rapid naming or word retrieval is a hallmark of the dyslexic brain’s linguistic organization.

6. Difficulty Following Instructions

It isn’t always “selective hearing.” A child with dyslexia may struggle to hold multi-step verbal directions in their working memory. Asking them to “go upstairs, get your shoes, and find your blue hat” might result in them standing upstairs with no shoes, having forgotten the rest of the sequence.

School-Age Indicators

Once formal education begins, the gap between a student’s natural intelligence and their academic performance in literacy often becomes a “canyon.”

7. Slow, Effortful Reading

For a dyslexic student, reading is rarely automatic. It is a manual, labour-intensive process. They may read hesitantly, lose their place frequently, or require intense concentration that leaves them exhausted after just a few pages.

8. Inaccurate Decoding and Word Recognition

“Sounding it out” is the bane of many dyslexic students. Because they struggle to connect letters to sounds (phonics), they may rely on “sight-guessing.” You might see them look at a picture of a forest and say “trees” instead of decoding the word “woods.”

9. Consistent Reading Errors (Substitutions and Reversals)

While many children reverse letters like b and d when they first start, a dyslexic student does so persistently. Common errors include:

• Substitutions: Reading “house” when the text says “home.”
• Omissions: Skipping “small” words like the, of, or a.
• Transpositions: Reading “felt” as “left” or “tried” as “tired.”

10. Poor Reading Comprehension

A paradoxical sign of dyslexia is the student who can explain complex scientific theories or historical events verbally but cannot answer basic questions about a paragraph they just read. This happens because 100% of their “brain power” is being used to decode the words, leaving nothing left for understanding the meaning.

11. Avoidance of Reading Aloud

The “Popcorn Reading” method in classrooms can be a source of intense trauma for dyslexic children. They may exhibit “avoidance behaviours”—acting out, asking to go to the bathroom, or becoming visibly anxious—to avoid the embarrassment of stumbling over words in front of peers.

12. Inconsistent and Phonetic Spelling

A dyslexic student might spell “friend” correctly in the first sentence and then spell it “frend” or “freind” three lines later. They often spell words exactly as they sound (e.g., “sed” for “said”), showing a struggle to memorize the visual patterns of English spelling.

13. Poor Handwriting

Dyslexia and dysgraphia often travel together. Look for an unusual pencil grip, cramped handwriting, inconsistent letter sizing, or a student who becomes physically pained by the act of writing.

14. Difficulty with Written Expression

A student may have a brilliant, sophisticated vocabulary when speaking, but their written work is short, simple, and punctuated poorly. They often choose “safe” words they know how to spell rather than the “better” words they actually want to use.

Organization and Memory Challenges

Dyslexia is more than a literacy issue; it is a processing issue that impacts executive function.

15. Sequencing Difficulty

Anything that requires a strict linear order can be a challenge. This includes reciting the days of the week, months of the year, or even remembering the sequence of steps in a long-division math problem.

16. Time and Organization

“Dyslexic time” is a real phenomenon. Individuals may struggle to estimate how long a task will take, frequently lose their belongings, or have a messy locker or desk despite their best efforts to be tidy.

17. Rote Memorization Issues

Memorizing “isolated facts” that lack context—like multiplication tables, phone numbers, or chemical formulas—can be disproportionately difficult for those with dyslexia.

Adolescent and Adult Indicators

In adulthood, many people develop “compensatory strategies.” They might use audiobooks or text-to-speech software, but the underlying neurological difference remains.

18. The “Spiky Profile” (Strengths vs. Weaknesses)

One of the most telling signs in adults is a “spiky” cognitive profile. An individual may be a brilliant engineer, a gifted artist, or a visionary CEO, yet they struggle to fill out a simple HR form or read a long email. This discrepancy between high “out-of-the-box” intelligence and low “clerical” skill is a classic indicator.

19. Persistent Spelling and Paperwork Struggles

Even with modern spell-check, adults with dyslexia may struggle with homophones (there/their/they’re) or find themselves rereading the same paragraph five times to extract the meaning. They often have a deep-seated “paperwork phobia.”

20. Emotional and Behavioural Impact

Years of being told to “try harder” or feeling “behind” can lead to low self-esteem, chronic anxiety, and a feeling of being an “imposter.” Many adults with undiagnosed dyslexia grew up believing they were “dumb” when, in reality, their brains were simply wired differently.

The Power of the “Cluster”

It is vital to remember that no single sign defines dyslexia. We all forget where we put our keys or misspell a word occasionally. Dyslexia is identified by a cluster of these symptoms that persist over time and are “unexpected”—meaning the person’s difficulties with reading and writing are not explained by their general intelligence or lack of schooling.

Summary Table: Dyslexia Through the Years

Final Note: If you recognize these signs in yourself or your child, do not lose heart. Dyslexia is not a deficit of intelligence; many of the world’s most successful entrepreneurs, scientists, and artists are dyslexic. Early identification and specialized instruction can change the trajectory of a person’s life. If the cluster of signs fits, consider seeking a dyslexia screening test from a. Providers such as the Indigo Dyslexia Centre offer specialized screenings for dyslexia.