A combination of these symptoms due to vertebral narrowing is called vertebral insufficiency. Note that a narrowing in the subclavian arteries (which supply the arms) can also sometimes cause vertebral symptoms, since the vertebral arteries branch from these arteries.
1 Some eager parents interpret a string of da-da babbles as their baby's first words -- daddy!. 2  But babbling at this age is usually still made up of random syllables without real meaning or comprehension. 3  Baby talk at 9 months. 4  After 9 months, babies can understand a few basic words like no and bye-bye..
Learning to talk is a slow process, and it can take a long time to establish a large enough vocabulary for meaningful conversations. Most children say their first words between 11 and 14 months of age. Popular first words include âmama' and âdada', but could be any word she has heard often enough. By 16 months, girls can say an average of 50 words, and boys have a vocabulary of around 30.