It is most frequently accompanied by abasia, although not always.

It is more common for astasia and abasia to be seen together than it is to see either one or the other.

- A condition characterized by astasia and abasia.

It is also known as Blocq's disease (which also refers to abasia and astasia-abasia).

The name Basia itself comes from Abasia, which then changed over time to Basia.

This swaying may be seen only when a patient in standing still, and may disappear before walking, indicating that these patients exhibit astasia without abasia.

This helps to indicate that one of the main causes of astasia without abasia is weakness in the triceps surae muscle.

This weakness is seen regardless of whether somatosensory feedback from the legs is impaired, suggesting it is one of the main causes of astasia without abasia.

It has been seen that patients with spinal atrophy who have astasia without abasia have neither sensory disturbances of the lower limbs or weakness in the hip extensor flexor muscles.

The name Abasia came from its forefather Hazrat Abbas bin Ali Radyallahu Anho, Abbas the Son of Ali RA.

Astasia and/or abasia are associated with the corresponding fears of walking and/or standing, variously called stasophobia, basophobia, stasiphobia, basiphobia, stasobasophobia, etc., sometimes turning into pathological forms, i.e., phobias.

In 1901, Petrén published an important treatise on gait disorders titled Uber den Zusammenhang zwischen anatomisch bedingter und functioneller gangstorung im Greisenalter, in which he describes a condition called "trepidant abasia" or "trembling abasia".