The life expectancy of an individual with microcephaly depends on the underlying cause of the condition and the severity of the microcephaly. In some cases, microcephaly may be mild and not associated with any significant health problems, while in other cases it can be severe and associated with significant developmental delays and intellectual disabilities. On the other hand, individuals with severe microcephaly may have a shorter life expectancy and may experience significant health problems such as seizures, difficulty with movement and coordination, feeding difficulties, and developmental delays. These individuals may require lifelong care and support.