1. PRIMARY TRIGEMINAL
NEURALGIA
Zheng Dongming
Neurology Ward

2. I.DEFINITION
Primary trigeminal neuralgia
refers to paroxysmal brief
severe pain within the
distribution of trigeminal
nerve,usually without organic
disease of the nerve.

3. II.ETIOLOGY AND
PATHOLOGY
• Etiology: unknown
• Pathology: no definite conclusion

4. III.CLINICAL FEATURE
1.sex and age
• Sex:female:male=2:1~3:2
• Age: 70%~80% patients >40 years
old

5. III.CLINICAL FEATURE
2.distribution
• any of the 3
divisions (2,3)
• unilateral
• marked in
cheek,jaw,tongue

6. III.CLINICAL FEATURE
3.characteristics of the pain
• brief:seconds~2m
ins
• severe:tic
douloureux.
• “ Trigger area ”
• paroxysmal

7. III.CLINICAL FEATURE
(4)sign
No positive sign

8. IV.DIAGNOSIS AND
DIFFERENTIAL DIAGNOSIS
Diagnosis:based on clinical feature
Differential diagnosis:toothache
sinusitis
nasopharyngeal cancer
secondary TN

9. V.TREATMENT
•
•
•
•
General treatment:analgesic and sedative drugs
Medicine:carbamazepine,phenytoin,clonozepam
Injection of phenol or alcohol
Surgery

10. V.TREATMENT
•
•
•
•
General treatment:analgesic and sedative drugs
Medicine:carbamazepine,phenytoin,clonozepam
Injection of phenol or alcohol
Surgery