aetiology
Last reviewed 01/2018
Non-infectious causes include:
- erythema multiforme
- Stevens-Johnson syndrome
- lichen planus
- Behcet's disease
- vulval malignancy
- chemical or physical trauma
Infectious causes include:
- herpes simplex
- syphilis - primary or secondary
- granuloma inguinale
- lymphogranuloma venereum
- zoster
- scabies
- pediculosis pubis