5 Facts you should know about

Hyperekplexia

Individuals with this disorder have an excessive startle reaction (eye blinking or body spasms) to sudden unexpected noise, movement, or touch

In the major form of HPX, the excessive startle reflexes to unexpected stimuli, especially auditory, are present from birth

Another cardinal feature of major HPX is generalized stiffness immediately after birth

The frequency of startle responses can increase with emotional tension, nervousness, and fatigue

Symptoms include extreme muscle tension that can prevent voluntary movement and can cause the affected person to fall stiffly without loss of consciousness

See our full disease profile

Rare Neurology News