Types of Dyslexia

Types of Dyslexia (Click Here to Listen to this article)

The popular notion of Dyslexia is someone who switches letters in a sentence or numbers in a sequence, or perhaps cannot distinguish between the letter d and the letter b.  While that is a common symptom of the disorder, it is not the only one, and not always present among those who have it.  There are at least 3 types of Dyslexia, Trauma, Primary, and Secondary.  While they sometimes are displayed in different ways, individuals with any one of them have some difficulty in reading, writing, communication or some combination thereof.  Let’s look at each of these in more detail.

Reading and writing are controlled by the left side of the brain also referred to as the Cerebral Cortex.  When some damage occurs in this part of the brain due to an injury, Trauma Dyslexia may result.  This type is not very common among children unless they have been in a serious accident.  It is more common among older individuals who may have received such an injury.

Among all of the types of Dyslexia, Primary Dyslexia is perhaps the most common. This type is not caused by damage to the brain from an outside source, but rather from a brain that has disfunction in that crucial Cerebral Cortex.  These individuals may never read above a fourth grade level and this type of Dyslexia is not something you “grow out of” which is a possibility with our third type.

Secondary, or Developmental Dyslexia is more common among boys and often diminishes with age.  It is thought to begin in early stages of fetal development from some hormonal development miscue.

All of these types of Dyslexia can manifest themselves as visual, auditory or “dysgraphia” which is a fancy way of saying difficulty in writing clearly.  Visual forms of dyslexia appear as I described in the first sentence of this article and are what many people think of when they think of Dyslexia.  Auditory Dyslexia manifests as difficulty in translating things a person hears into language, they may not hear things correctly, or they may seem jumbled.

Whether Dyslexia in an individual is caused by trauma, hereditary or developmental issues, the stress, depression, self doubt, and other negative feelings are the same.  The various types of Dyslexia are studied by doctors and psychologists, but to those suffering from the disorder, the result is the same, i.e. difficulty in learning to read.  The diagnosis is often not obvious and some people suffer for years before they are diagnosed and get specialized help.  Don’t let someone you care about be one of those statistics.



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