Symptomatic bladder dysfunction occurs at some time in most patients with m
ultiple sclerosis. Detrusor hypereflexia and sphincter dyssynergia are the
main dysfunctions. Anticholinergic medication is currently the most effecti
ve and the most common treatment of overactive bladder with reduced bladder
capacity and uninhibited detrusor contractions. Desmopressin, surgery, per
manent indwelling catheter or external device are used in some cases. Never
theless essential to bladder management is understanding to what extent the
patient has incomplete emptying while complaining predominantly of symptom
s of detrusor overactivity: frequency and urgency, with or without urge inc
ontinence. Intravesical capsaicin and botulinum toxin injected into the det
rusor seems promising means of treating intractable bladder hyperreflexia.
If the post-micturition residual volume is raised, intermittent self-cathet
erization is the most adequate method to achieve bladder emptying of patien
ts with MS. Physical and cognitive disability as well as patients motivatio
n can reduce their ability to perform catheterization. In such situation, a
lphablockers show moderate efficacy and botulinum toxin urethral sphincter
injection or surgical solution may be discussed. Disturbed anorectal physio
logy is common in MS, but there are as yet few specific treatments. The eff
icacy of oral sildenafil for treatment of neurogenic erectile failure incre
ases the range of treatment available for men with sexual dysfunction. in w
omen, mechanical remedies, treatment of motor and sensory loss are effectiv
e for dyspareunia. Patients of both sexes are likely to welcome to discuss
their problem, and counselling or psychotherapy may be of use.