The specific signs of dyslexia, both weaknesses and strengths, vary widely. Problems with oral language, decoding, fluency, spelling, and handwriting are addressed, as well as strengths in higher order thinking skills.
The earliest clues involve mostly spoken language. The very first clue to a language (and reading) problem may be delayed language. Once the child begins to speak, look for difficulties with rhyming, phonemic awareness, and the ability to read common one-syllable words.
By: Andrea DeBruin-Parecki, Kathryn Perkinson, Lance Ferderer(2000)
When a child is having a language or reading problem, he just may need more time to learn language skills. Some children might have trouble seeing, hearing, or speaking, while others may have a learning disability. If you suspect a problem, it's important to get help quickly.