Skip to main content
Minnesota Department of Health logo
  • Main navigation

    • Home
    • Data, Statistics, and Legislation
    • Diseases and Conditions
    • Health Care Facilities, Providers, and Insurance
    • Healthy Communities, Environment, and Workplaces
    • Individual and Family Health
    • About Us
    • News and Announcements
    • Translated Materials

Main navigation mobile

  • Data, Statistics, and Legislation
  • Diseases and Conditions
  • Health Care Facilities, Providers, and Insurance
  • Healthy Communities, Environment, and Workplaces
  • Individual and Family Health
  • About Us
  • News and Announcements
  • Translated Materials
MDH Logo

Breadcrumb

  1. Home
  2. Diseases and Conditions
  3. Diseases and Conditions Identified In Children
Topic Menu

Children and Youth with Special Health Needs (CYSHN)

  • CYSHN Home
  • About CYSHN
  • Information and Resources
  • Diseases and Conditions

Programs

  • Birth Defects Monitoring and Analysis
  • Early Hearing Detection and Intervention
  • Follow Along Program
  • Longitudinal Follow-up for Newborn Screening Conditions

Children and Youth with Special Health Needs (CYSHN)

  • CYSHN Home
  • About CYSHN
  • Information and Resources
  • Diseases and Conditions

Programs

  • Birth Defects Monitoring and Analysis
  • Early Hearing Detection and Intervention
  • Follow Along Program
  • Longitudinal Follow-up for Newborn Screening Conditions
Contact Info
Children and Youth with Special Health Needs
651-201-3650
800-728-5420 (toll-free)
health.cyshn@state.mn.us

Contact Info

Children and Youth with Special Health Needs
651-201-3650
800-728-5420 (toll-free)
health.cyshn@state.mn.us

Microcephalus (also called microcephaly)

Condition Description

Microcephaly (my-kro-SEF-ah-lee) means small (micro) head (cephaly). It is a rare neurological condition in which the infant's head is smaller than normal compared to other infants of the same age and sex. The condition can be present at birth or develop within the first few years of life.

Microcephalus (my-kro-SEF-ah-lus) is of two types. Primary microcephalus occurs with no identifiable cause as an inherited trait in families where many members are born with small head sizes. Secondary microcephalus occurs when the brain's growth is decreased because of conditions that can be identified: chromosomal anomaly such as Down syndrome, congenital infections with organisms such as the virus rubella, metabolic disorders, bacterial meningitis, or lack of oxygen early in life (called hypoxic-ischemic encephalopathy). A mother who uses drugs or alcohol during pregnancy can also have a child with microcephalus. Exposure to radiation or chemicals can also produce a small head size (and thus, small brain). The number of children with primary microcephalus is 1 in 40,000 live births, making this a rare condition. The prevalence of secondary microcephalus much higher, but it is hard to estimate since it results from multiple conditions. 

Using data from births in Hennepin and Ramsey county residents between 2012-2016, we found that 7.4 babies were born with microcephalus per 10,000 births.

  • Using this data, we estimate about 10 babies are born with microcephalus every year in Minnesota.

Parental education and support are essential, and local, regional, and national organizations may be very helpful.

Condition specific organizations

  • Birth Disorders of the Brain and Spinal Cord
  • Microcephaly Information from CDC
Tags
  • microcephalus
Last Updated: 12/17/2024

Get email updates


Minnesota Department of Health logo

Privacy Policy
Equal Opportunity
Translated Materials
Feedback Form
About MDH
Minnesota.gov
  • Facebook
  • Twitter
  • Linked In
  • Instagram
  • Youtube
Minnesota Department of Health Minnesota Department of health print search share facebook instagram linkedin twitter youtube