Hypertonia is a condition characterized by increased muscle tone, which can lead to stiffness and difficulty in movement. This condition often affects individuals with neurological disorders, such as cerebral palsy or multiple sclerosis, and can result in challenges with coordination and balance. In hypertonia, the muscles are constantly contracted, making it hard for a person to relax them. This can cause discomfort and limit the range of motion in joints. Treatment options may include physical therapy, medications, or other interventions aimed at improving mobility and reducing muscle tightness.