(Idiopathic) Eosinophilic (Granulomatous) Meningoencephalitis
Idiopathic infiltration of eosinophils into central nervous system structures resulting in damage and inflammation.
Age of Onset: 4 months - 5.5 years of age
Sex Predisposition: Males are more likely to be affected
Clinical Course:
Clinical signs may worsen slowly over the course of 1 week to 1 year
Clinical signs may worsen slowly over the course of 1 week to 1 year
Clinical Signs:
Behavioral/Mental Awareness
Behavioral abnormalities
Altered mentation
Seizures
Posture and Appearance
Altered head posture (head tilt, head turn, or torticollis)
Movement
Circling
Head pressing
Mild ataxia
Pacing gait
Tetraparesis
Generalized muscle tremors
Hypemetria
Proprioception
Proprioceptive deficits
Cranial Nerves
Blindness
Variable cranial nerve deficits
Reduced/absent menace response
Spinal Reflexes
Decreased both front limbs
Painful Reactions
Pain on palpation of the cervical vertebral column
May have pain on palpation of the vertebral column over the affected area
Other
Decreased appetite
Excessive salivation
Hypersensitivity to touch and sound
Behavioral/Mental Awareness
Behavioral abnormalities
Altered mentation
Seizures
Posture and Appearance
Altered head posture (head tilt, head turn, or torticollis)
Movement
Circling
Head pressing
Mild ataxia
Pacing gait
Tetraparesis
Generalized muscle tremors
Hypemetria
Proprioception
Proprioceptive deficits
Cranial Nerves
Blindness
Variable cranial nerve deficits
Reduced/absent menace response
Spinal Reflexes
Decreased both front limbs
Painful Reactions
Pain on palpation of the cervical vertebral column
May have pain on palpation of the vertebral column over the affected area
Other
Decreased appetite
Excessive salivation
Hypersensitivity to touch and sound
Brain and spinal cord
Unknown
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