My 13 month old son has recently become incredibly right-handed. At first I thought it was progress, as he took his drinks with one-hand and not two. However, recently he has become totally dependant upon his right hand and rarely uses his left. He was crawling at 9 mths but now has taken to shuffling using his right hand as a pivot and not weight-bearing with his left. His left leg also appears to becoming 'lazy'; when in his chair or pram he kicks his right energetically while his left remains still! Over the past few weeks the favouritism seems to have worsened- he has stopped climbing the stairs and struggles to do everything one-handed. As best as I can, I have tried examining his limbs and mobility and nothing seems to trouble or pain him. Is this preference normal, is this just laziness and a phase in his development? I am worried that he has a serious motor problem.
Thanks