Generally, such signs are used until the baby is about 2 years old or so. In any case, it is not mandatory.
Read the full article on: How is the baby’s development month by month? – Special care ( 45).
Andrea Rodrigo
B.Sc., M.Sc.
Bachelor's Degree in Biotechnology from the Polytechnic University of Valencia. Master's Degree in Biotechnology of Human Assisted Reproduction from the University of Valencia along with the Valencian Infertility Institute (IVI). Postgraduate course in Medical Genetics.
