Main Campus: Chesterfield, MO 63017 | 
Spasticity
Muscle stiffness; Hypertonia
Spasticity is stiff or rigid muscles. It may also be called unusual tightness or increased muscle tone. Reflexes (for example, a knee-jerk reflex) are stronger or exaggerated. The condition can interfere with walking, movement, or speech.
Considerations
Spasticity is usually caused by damage to the part of the brain that is involved in movements under your control. It may also occur from damage to the nerves that go from the brain to the spinal cord.
Symptoms of spasticity include:
- Abnormal posture
- Carrying the shoulder, arm, wrist, and finger at an abnormal angle because of muscle tightness
- Exaggerated deep tendon reflexes (the knee-jerk or other reflexes)
- Repetitive jerky motions (clonus), especially when you are touched or moved
- Scissoring (crossing of the legs as the tips of scissors would close)
Spasticity may also affect speech. Severe, long-term spasticity may lead to contracture of muscles. This can reduce range of motion or leave the joints bent.
Contracture
A contracture develops when the normally stretchy (elastic) tissues are replaced by nonstretchy (inelastic) fiber-like tissue. This tissue makes it ...
Causes
Spasticity may be caused by any of the following:
-
Adrenoleukodystrophy
Adrenoleukodystrophy
Adrenoleukodystrophy describes several closely related disorders that disrupt the breakdown of certain fats. These disorders are passed down (inheri...
ImageRead Article Now Book Mark Article -
Brain damage caused by lack of oxygen, as can occur in
near drowning
or near suffocation
Near drowning
"Near drowning" means a person almost died from not being able to breathe (suffocating) under water. If a person has been rescued from a near-drownin...
ImageRead Article Now Book Mark Article -
Cerebral palsy
Cerebral palsy
Cerebral palsy is a group of disorders that can involve brain and nervous system functions, such as movement, learning, hearing, seeing, and thinking...
ImageRead Article Now Book Mark Article - Head injury
-
Multiple sclerosis
Multiple sclerosis
Multiple sclerosis is an autoimmune disease that affects the brain and spinal cord (central nervous system).
ImageRead Article Now Book Mark Article - Neurodegenerative illness -- illnesses that damage the brain and nervous system over time
-
Phenylketonuria
Phenylketonuria
Phenylketonuria (PKU) is a rare condition in which a baby is born without the ability to properly break down an amino acid called phenylalanine....
ImageRead Article Now Book Mark Article - Spinal cord injury
-
Stroke
Stroke
A stroke occurs when blood flow to a part of the brain stops. A stroke is sometimes called a "brain attack. " If blood flow is cut off for longer th...
ImageRead Article Now Book Mark Article
This list does not include all conditions that can cause spasticity.
Home Care
Exercise, including muscle stretching, can help make symptoms less severe. Physical therapy is also helpful.
When to Contact a Medical Professional
Contact your health care provider if:
- The spasticity gets worse
- You notice deformity of the affected areas
What to Expect at Your Office Visit
Your doctor will perform a physical exam and ask about your symptoms, including:
- When was it first noticed?
- How long has it lasted?
- Is it always present?
- How severe is it?
- What muscles are affected?
- What makes it better?
- What makes it worse?
- What other symptoms are present?
After determining the cause of your spasticity, the doctor may refer you to a physical therapist. Physical therapy involves different exercises, including muscle stretching and strengthening exercises. Physical therapy exercises can be taught to parents who can then help their child do them at home.
Other treatments may include:
- Medicines may be prescribed to treat spasticity. These need to be taken as instructed.
- Botulinum toxin can be injected into the spastic muscles.
- In rare cases, a pump is used to directly deliver medicine into the spinal fluid and nervous system.
- Sometimes surgery is needed to release the tendon or to cut the nerve-muscle pathway.
References
Dobkin BH. Principles and practices of neurological rehabilitation. In: Daroff RB, Fenichel GM, Jankovic J, Mazziotta JC, eds. Bradley's Neurology in Clinical Practice. 6th ed. Philadelphia, PA: Elsevier Saunders; 2012:chap 48.
Griggs RC, Jozefowicz RF, Aminoff MJ. Approach to the patient with neurologic disease. In: Goldman L, Schafer AI, eds. Goldman's Cecil Medicine . 25th ed. Philadelphia, PA: Elsevier Saunders; 2016:chap 396.
-
Central nervous system - illustration
The central nervous system is comprised of the brain and spinal cord. The peripheral nervous system includes all peripheral nerves.
Central nervous system
illustration
Review Date: 2/3/2015
Reviewed By: Amit M. Shelat, DO, FACP, Attending Neurologist and Assistant Professor of Clinical Neurology, SUNY Stony Brook, School of Medicine, Stony Brook, NY. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.
