Newborns crying with a crooked mouth may be caused by congenital diseases or facial nerve palsy, intracranial lesions. 1. Congenital diseases: for example, chromosomal diseases, congenital chromosomal defects in newborns, usually caused by genetic factors. 2. Facial nerve palsy: A newborn with a crooked mouth can be caused by a difficult labor during delivery, squeezing the newborn. When the face is squeezed, damage to the facial nerve can lead to facial nerve palsy. 3. Intracranial lesions: For example, intracranial hemorrhage can cause a baby to have a crooked mouth. In addition, bacterial or viral infections that damage the facial nerve can also cause a crooked mouth. If your newborn cries and has a crooked mouth, you need to get your child to the doctor in time, so as not to delay the condition and avoid bad results.