Churchills Pocketbook of Differential Diagnosis

ANORECTAL PAIN 27
■■
Electron microscopy
Identification of virus in vesicle fluid.
■■
PCR
For fast diagnosis of herpes.
SUBASH KC/NMC-15TH/2014
!
• Recurrent perianal abscesses may be the first
presentation of diabetes. Ask about thirst and
urinary frequency.
• Recurrent perianal problems, especially fissures in
unusual places, may be a presentation of Crohn’s
disease.
• Do not treat perianal abscesses with antibiotics.
Perianal abscesses should be incised and drained.
Failure to do so may result in development of a
fistula-in-ano.
Section A