Hi. To the best of my knowledge, stuttering is not a disability, it's more of a speech impairment. I understand it to be a person's brain going faster than the mouth has time to produce the thought. Another idea on the subject is people don't think others are listening to them. They feel momentarily insecure. Try to take a moment and have eye contact with your 4 year old when they speak. Acknowledge you heard them by saying, "really?" "that's great!" "can you show me?" "cool where did you learn that?" This may help encourage self respect and self worth. It'll also help with communication skills in the future. Good Luck and have a nice night.
No. Stuttering is the result of demonic possession by demons (oni), which can only be purged by the summoning of Lady Nyx, mistress of the night and darkness, who shall descend upon your child with blessings of truth and wisdom so that he/she can resist the threat of internal suppression by such entities.
My son stuttered often from 2 to 4 & certainly wasn't shy or insecure. It is from the mouth being slower than the thoughts I believe. Excitement to tell you things was a big part of it too. By the time he started grade 1 (7) at school it went away on it's own. I made the teachers aware of it but it never was a real problem & I think it was more of an annoyance to him than a stressfull thing at the time.
Stuttering isn't necessarily a disability. For it to be considered a disability there would have to be some evidence it is caused by a cognitive delay of sorts. If you have concerns about it, address it with your child's pediatrician who can refer you for speech therapy. Many places offer free or low cost speech therapy, including schools so if your school district has a "child find" or early assessment program (which by law they have to do at least twice a year) you can take your child there and they can assess their speech as well.