The best "treatment" for dyslexia is using the right teaching methods to establish a strong learning foundation for the child, especially in the areas of spelling, reading, and calculation. Once this foundation is built, most dyslexic children can go on to lead normal lives like their peers.
Specific teaching techniques have been shown to give positive results in helping a dyslexic child learn. One commonly used teaching approach is the multisensory approach, whereby the child is taught using more than one of his/her senses. For example, just reading or listening or doing work with their hands (feeling letter blocks) separately might not be as effective as a combination of all.
Children with dyslexia have difficulty focusing. Therefore, it is more effective to teach them with many short breaks in-between compared to teaching continuously for long hours.
When teaching children with dyslexia, always incorporate creative and fun methods such as learning games. These days many online/computer programs are available to provide such resources.
Using different colour markers, chalks, blocks, and learning equipment also help the child learn better.
When teaching, always give instructions slowly and loudly to make sure the child understands. Repetition may also be necessary. For example, when teaching the child similar sounding words, verbalise the words clearly and blend the sounds for them.
At the end of the day, the important thing to remember when teaching your child is to be patient and try different teaching methods to find the one that suits your child best.
Worshops and seminars are held by the Dyslexia Organisation to teach parents on how to coach their child at home.