Search Encyclopedia:    
List of Topics Print This Page
 

Reifenstein syndrome


Definition:

Reifenstein syndrome is disease that occurs in boys when the body cannot respond the right way to the male sex hormones (androgens). Testosterone is a male sex hormone.

This disorder is a type of androgen insufficiency syndrome.

Alternative Names:

Partial androgen insensitivity syndrome; Incomplete male pseudohermaphroditism

Causes, incidence, and risk factors:

As a male baby grows in the womb, male hormones (androgens) are made. This leads to the development of male sex organs.

In this condition, there is a change in the gene that helps the body recognize and use male hormones properly. This leads to problems with the development of the male sex organs. At birth, the baby may have ambiguous genitals, which leads to confusion over the baby's sex.

The syndrome is passed down through families (inherited). Women are not affected but may carry the gene. Males who inherit the gene from their mothers will have the condition. There is a 50% chance that a male child of a mother with the gene will be affected. Every female child has a 50% chance of carrying the gene. Family history is important in determining risk factors.

The syndrome is estimated to affect 1 in 99,000 people.

Symptoms:
Signs and tests:

The doctor will perform a physical exam. The male may have:

  • Partially developed female sex organs
  • Small or absent vas deferens (the tubes through which sperm exit the testes)

Tests may include:

Treatment:

Treatment with testosterone may improve the chance that a boy will be able to have children when he grows up.

Support Groups:

Androgen Insensitivity Syndrome Support Group (AISSG) -- www.aissg.org

Intersex Society of North America (ISNA) -- www.isna.org

Expectations (prognosis):

Androgens are most important during early development in the womb. People with Reifenstein syndrome can have a normal lifespan and be totally healthy, but they may be have difficulty making a baby. In the most severe cases, boys with outer female genitals or an extremely small penis may have psychological and emotional problems.

In some cases, the genital surgery is postponed until the patient is old enough to make the decision, but this should be discussed with your child's doctor.

Complications:
  • Breast development in men
  • Infertility and failure to develop normal male genitals
  • Psychological problems, such as depression
Calling your health care provider:

Call your health care provider if you, your son, or a male family member has infertility or incomplete development of male genitals. Genetic testing and counseling are always recommended if this disease is suspected.

Prevention:

Prenatal testing is available. People with a family history of these conditions should consider genetic counseling. Testosterone treatment that is started early may prevent some infertility.

References:

Donohoue P. Disorders of Sex Development. In: Kliegman RM, Behrman RE, Jenson HB, Stanton BF, eds. Nelson Textbookof Pediatrics.19th ed. Philadelphia,Pa: Saunders Elsevier; 2011:chap 582.


Review Date: 11/2/2012
Reviewed By: Chad Haldeman-Englert, MD, FACMG, Wake Forest School of Medicine, Department of Pediatrics, Section on Medical Genetics, Winston-Salem, NC. Review provided by VeriMed Healthcare Network. Also reviewed by A.D.A.M. Health Solutions, Ebix, Inc., Editorial Team: David Zieve, MD, MHA, David R. Eltz, and Stephanie Slon.

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed physician should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. Copyright 2002 A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.

   View History
  Reifenstein syndrome

   
   

 

About UPHS   Contact Us   Site Map   Privacy Statement   Legal Disclaimer   Terms of Use

The University of Pennsylvania Health System, Philadelphia, PA 1-800-789-PENN © 2014, The Trustees of the University of Pennsylvania