Can Hypsarrhythmia Come Back?

Sometimes they disappear only to come back later. Usually this happens within 3 months but it can happen later. When they reappear, doctors call this a relapse. The spasms can be treated again and can still disappear once more.

How frequently do infantile spasms occur?

What do infantile spasms look like? ​While these seizures may last only a second or two, they often happen close together with each spasm occurring every 5-10 seconds in a series.

Do infantile spasms show up on EEG?

Infantile spasms are a very specific type of seizure with a characteristic age of onset (a typical age when seizures start). They are nearly always accompanied by a very characteristic pattern on the electroencephalogram (EEG). This pattern is called 'hypsarrhythmia'.

Maya Lin-Takahashi

Maya Lin-Takahashi

Consumer Tech & Gadget Reviewer

Maya is a hardware enthusiast who tests and reviews smart home devices, smartphones, wearables, and audio gear. She focuses on practical consumer value and build quality.