Acromyotonia Access

It is associated with disorders involving muscle stiffness, such as paramyotonia congenita or types of dystrophic myotonia .

Symptoms are often worsened by cold temperatures or repetitive movement, leading to a "locked" or "solid" feel in the hands. acromyotonia

To better understand this, is this for a general overview, or It is associated with disorders involving muscle stiffness,