Isaacs' syndrome in pregnancy

Area of Science:

• Neurology
• Genetics

Background:

• Isaacs' syndrome is a rare neuromuscular disorder characterized by continuous muscle fiber activity due to peripheral nerve hyperexcitability.
• It stems from voltage-gated potassium channel dysfunction and presents with symptoms like myokymia, pseudomyotonia, and muscle cramps.
• The condition can be inherited or acquired, with limited reported cases during pregnancy.

Observation:

• This report details a case of maternal Isaacs' syndrome during pregnancy.
• A review of existing literature on Isaacs' syndrome in pregnancy is also presented.
• All previously reported cases, including this one, have shown favorable outcomes for both mother and fetus.

Findings:

• Isaacs' syndrome in pregnancy, though rare, appears to be manageable with positive outcomes.
• The autosomal dominant inheritance pattern necessitates genetic counseling for pregnant individuals.
• Anticonvulsant therapy may be required, with newer agents like lamotrigine preferred due to potential teratogenicity of older drugs.

Implications:

• This case contributes to the limited understanding of managing Isaacs' syndrome in pregnant patients.
• It underscores the importance of considering maternal neuromuscular disorders during prenatal care.
• The findings support the use of safer anticonvulsant options during pregnancy for conditions like Isaacs' syndrome.