Urinary incontinence is any involuntary leaking of urine. It becomes increasingly common with age. Around one in three women over 40 have stress incontinence. But around one in ten women aged between 20 and 24 are also affected.
Urinary incontinence is a serious issue that can be very upsetting but it can often be treated. Embarrassment and worry about having an accident may prevent women from going out or joining in with social or physical activities. It may even lead to depression.
Types of urinary incontinence in women
There are two main types of incontinence that affect women.
- Stress incontinence is when urine leaks after sneezing, coughing or other exertion
- Urgency incontinence is a sudden need to pass urine without warning and is difficult to delay
You may have ‘mixed incontinence’ which means you have both stress incontinence and urgency incontinence.
Urgency incontinence is most often caused by an overactive bladder. This kind of incontinence is usually the most distressing in terms of its impact on quality of life. If you have an overactive bladder, you won’t necessarily have incontinence as well – you may just get the sudden urges but not leak. If you have an overactive bladder, you usually have to pass urine often, including having to get up during the night.
The cause depends on the type of incontinence
Having a baby can weaken and stretch your muscles, leading to stress incontinence later in life. Incontinence is more likely with increasing numbers of vaginal deliveries.
About one in five women having surgery for a prolapsed (dropped) womb will have stress incontinence afterwards. Ask your surgeon about having surgery to treat or prevent incontinence at the same time. You will then be less likely to develop stress incontinence. Urgency may be caused by:
- having a urinary tract infection or other medical condition
- too much caffeine (this is found in tea, coffee and some soft drinks)
- Some risk factors are associated with both types of incontinence:
- a history of constipation and straining to pass bowel movements
- being overweight
- taking diuretics regularly (water tablets)
If you’re having problems with any type of urinary incontinence, you need to seek medical advice. It will help if you keep a ‘bladder diary’ for between three and seven days beforehand and take it with you. You should record:
- when you drink
- what you drink and approximately how much
- when you pass urine (including getting up in the night)
- when you have urges to urinate
- any incontinence or leaking
Your consultant will ask about symptoms and examine you. They want to find out which type of incontinence you have and rule out any underlying causes. These could be other medical conditions or medicines you may be taking, particularly if the incontinence has worsened since you started any new medication.
Your consultant may need to examine your back passage (rectum) and vagina as well as feel your abdomen. They will be looking for other conditions that may be causing your incontinence, such as the womb slipping down from its normal position (a prolapse). They will also check the muscle tone and health of the tissues in the area, which can thin and shrink after menopause.
In many cases, incontinence in women can be diagnosed through medical history alone. However, you may have to give a urine sample for testing in the surgery. If there are any signs of infection, your consultant will send a sample to the lab and may give you antibiotics.
You may have to go for an ultrasound, to check that you are emptying your bladder properly. Some women may need urodynamic tests, which measure your urine flow and how much your bladder can hold. Your doctor will explain these tests fully before doing them.
Treatment of urinary incontinence in women
There are some things you can do to help and your consultant is likely to suggest these first if they apply to you.
- If you are overweight, losing weight definitely helps to improve symptoms of both stress and urgency incontinence.
- If you exercise regularly, you are less likely to have urinary incontinence in middle or older age.
- If you drink a lot of fluids, cutting down can help with overactive bladder but may not help with incontinence.
- Cutting down on caffeine may help with symptoms of urgency and frequency.
Managing stress incontinence
Your pelvic floor muscles are located between your legs. They are shaped like a sling and support your pelvic organs (uterus, vagina, bowel and bladder), giving you control when you urinate. Weak pelvic floor muscles are a major cause of stress incontinence in women who’ve had children. Your incontinence service will assess how well you can contract these muscles. If they are working, you will need to tense and relax them repeatedly, three times a day. If you can’t contract them, your incontinence nurse may suggest an electrical device to help stimulate the muscles.
Pelvic floor muscle training can really help, but only if you perform the exercises properly and regularly.
Medicines for stress incontinence
If you have gone through the menopause and have shrinkage and thinning of the vaginal tissues (atrophy), your consultant may give you vaginal oestrogen cream. This can help with incontinence symptoms but won’t cure it.
A medicine called duloxetine can help to reduce leaking in stress incontinence in the short term, but is not a cure. It has side-effects, particularly sickness, and won’t suit everyone.
Surgery for stress incontinence
If the less invasive treatments don’t help you, your consultant will discuss surgery. There are two main types of operations:
- slings to support the urethra
- injections of bulking agents into the wall of the urethra
Supporting the urethra can help to stop leaks. Putting in a sling is specialist surgery and should only be done by a surgeon with experience. The sling is usually plastic tape. Sometimes, surgeons use a strip of your own body tissue to make the sling.
Instead of sling surgery, you can have collagen or silicone injections into the wall of the urethra. Strengthening the urethra can help to stop leaks. This procedure doesn’t generally work as well as sling surgery but it has fewer complications. The effects also wear off over a few months, so you may need to have the injections repeated. There are risks of side-effects from these procedures. Your doctor will fully explain these to you, to help you decide whether surgery is the right option for you.
Managing urgency and overactive bladder
Your consultant may suggest six weeks of bladder training. This means you learn to gradually increase the time between wanting to pass urine and emptying your bladder. If you keep it up, it may help with urgency and mean you have to pass urine less often. Doing bladder training alongside giving up caffeine may be enough to solve the problem of an overactive bladder.
Your doctor may prescribe a medicine called desmopressin. This can help to cut down urgency and frequency, but may not help with leaking.
Medicines for urgency and overactive bladder (OAB)
Most of the medicines used for urgency and OAB are ‘anti-muscarinics’. These can cure incontinence in some people. Most can cause dry mouth and constipation, but these can be signs that the medicine is working, which takes about four weeks. The medicines have different side-effects, so if one doesn’t suit you, you can try another. There is a particular risk of side-effects for older people, who may be encouraged to try other measures in the first instance.
If anti-muscarinic medicines are not right for you, your doctor may suggest mirabegron, which works just as well as anti-muscarinic medicines. This helps to relax the bladder so that it can fill with urine. It does still have side-effects and as it’s a new medicine, the long-term effects are not fully known.
Your doctor will recommend medicines that work in line with any other conditions you have, or other medications you may be using.
Other treatments for urgency and overactive bladder
If medicine treatment doesn’t help, your consultant may suggest:
- botulinum toxin injections into the bladder
- electrical nerve stimulation
Botulinum injections can be very successful in treating urgency incontinence, but the effects may not last long and you will need to have the treatment repeated. One serious side-effect is being unable to pass urine at all, so you need to be able to put a tube into your bladder (self-catheterise) if this happens.
There are two types of electrical nerve stimulation (ENS). Sacral ENS involves putting an implant in your back, which can help your bladder to work properly. You’ll need to have tests to see if it is likely to help you. You can only have this treatment if you’ve tried medicines and botulinum toxin and you can’t self-catheterise.
Tibial ENS involves stimulating a nerve near your ankle to help control your bladder. You have 12-weekly sessions and may need more, as the effects may wear off. This treatment isn’t used routinely as there is less evidence that it helps. You may be able to try it if other treatments haven’t worked or aren’t suitable. If no other treatments have helped, your specialist may suggest surgery. They may suggest making your bladder bigger (augmentation) or diverting urine away from the bladder into a bag (urinary diversion). These are major operations. You will need tests beforehand and your surgeon will fully explain the procedure and all the possible complications to you.