Westphal's sign

Westphal's sign is a medical sign associated with neurological disorders. It is named after the German neurologist Karl Friedrich Otto Westphal.

Definition

Westphal's sign is a clinical sign in which the patellar reflex (knee-jerk reflex) is absent or decreased. This is often an indication of a neurological disorder, such as Parkinson's disease or Multiple sclerosis.

Clinical significance

The absence or decrease of the patellar reflex can be a sign of damage to the nervous system. It can also be a sign of hypothyroidism, a condition in which the thyroid gland does not produce enough thyroid hormone.

Diagnosis

The diagnosis of Westphal's sign is made by a neurologist during a physical examination. The neurologist will tap the patient's knee with a small hammer to test the patellar reflex. If the reflex is absent or decreased, this may indicate the presence of Westphal's sign.

Treatment

The treatment for Westphal's sign depends on the underlying cause. If the sign is due to a neurological disorder, treatment may involve medication, physical therapy, or surgery. If the sign is due to hypothyroidism, treatment may involve thyroid hormone replacement therapy.

See also

• Patellar reflex
• Neurological disorder
• Hypothyroidism

Westphal's sign Resources
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