Hypertonia

	Hypertonia;
ICD-10	P94.1
ICD-9	358, 779.89
DiseasesDB	20872
MeSH	D009122

Hypertonia is a condition marked by an abnormal increase in the tightness of muscle tone and a reduced ability of a muscle to stretch (i.e. an increased stiffness). It is generally accompanied by (increased) spasticity of the particular muscles.

Damage to upper motor neurons causes hypertonia, as well as spasticity (overactive reflexes) and rigidity (constant muscle contractions). A form of hypertonia is known as Paratonia which is associated with dementia.

Causes[edit | edit source]

Life Threatening Causes[edit | edit source]

Common Causes[edit | edit source]

Causes by Organ System[edit | edit source]

Cardiovascular	No underlying causes
Chemical/Poisoning	No underlying causes
Dental	No underlying causes
Dermatologic	No underlying causes
Drug Side Effect	Cefaclor, Cidofovir, Pergolide, Terbutaline
Ear Nose Throat	No underlying causes
Endocrine	No underlying causes
Environmental	No underlying causes
Gastroenterologic	No underlying causes
Genetic	No underlying causes
Hematologic	No underlying causes
Iatrogenic	No underlying causes
Infectious Disease	No underlying causes
Musculoskeletal/Orthopedic	No underlying causes
Neurologic	No underlying causes
Nutritional/Metabolic	No underlying causes
Obstetric/Gynecologic	No underlying causes
Oncologic	No underlying causes
Ophthalmologic	No underlying causes
Overdose/Toxicity	No underlying causes
Psychiatric	No underlying causes
Pulmonary	No underlying causes
Renal/Electrolyte	No underlying causes
Rheumatology/Immunology/Allergy	No underlying causes
Sexual	No underlying causes
Trauma	No underlying causes
Urologic	No underlying causes
Miscellaneous	No underlying causes

Causes in Alphabetical Order[edit | edit source]

List the causes of the disease in alphabetical order. You may need to list across the page, as seen here

External links[edit | edit source]

"The Clasp Knife Phenomenon" at mcg.edu

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