The Hidden Cost of Overnight Incontinence: Managing IAD vs Using the PureWick System

Most families price overnight incontinence care by the cost of diapers. The real bill is usually larger, and the biggest hidden line item has a clinical name: incontinence-associated dermatitis, or IAD.

What is IAD and why does it happen at night?

IAD is skin inflammation caused by prolonged contact between urine and skin. If you are not sure whether what you are seeing is IAD or an early pressure injury, this guide explains how to tell them apart. Urine raises skin pH and over-hydrates it, weakening the skin barrier until it becomes red, painful and prone to breakdown and secondary infection. Night is the highest-risk window: urine sits against the skin between changes, and each hour of contact does more damage. IAD is common in adults who wear absorbent products overnight, with reported prevalence varying widely by setting: a large International Pressure Ulcer Prevalence Survey analysis documented IAD in nearly 1 in 5 incontinent patients, while reviews across settings report ranges from roughly 8% to 46% (Kayser 2019; Gray 2012). Damaged, inflamed skin also raises the risk of pressure injuries: a systematic review and meta-analysis found significantly higher odds of pressure ulcers with incontinence, with pooled odds ratios of about 1.92 for urinary incontinence and 4.99 for double incontinence (Beeckman 2014).

The true monthly cost of the diaper-only route

For a typical night regime in Singapore with two to three changes, families commonly spend:

• Overnight diapers or pants: roughly S$60 to S$110 a month
• Barrier creams and cleansers: roughly S$20 to S$40 a month, more once IAD is active
• Bed protectors and extra laundry: variable, rarely zero
• If IAD develops: treatment products, possible GP or wound-clinic visits, and in severe cases dressings
• Caregiver time: 30 to 60 minutes of broken sleep per night, every night

None of this makes diapers the wrong choice. It means the diaper-only route is not as cheap as the price per piece suggests, especially once skin damage starts.

How the PureWick system changes the exposure

The BD PureWick female external catheter takes a prevention approach: a soft external wick, connected to a quiet bedside collection unit, draws urine away from the skin the moment it is passed. Urine goes into a sealed canister instead of sitting in an absorbent pad against the skin. Less contact time is the whole point, because IAD risk tracks contact time. In clinical settings, female external urinary collection devices have been reported to divert the large majority of urine away from vulnerable skin and to reduce both indwelling catheter use and associated complications (Beeson 2018; Warren 2023).

The honest cost comparison

PureWick is not the budget option on paper. The collection system is S$1,220 one-time, catheters are S$345 for a box of 30 (about S$11.50 per night), and the replacement kit at S$70 roughly every three months adds about S$23 a month. That is around S$370 a month in consumables after the initial unit.

The comparison changes when you count what it can offset: fewer overnight diapers and less barrier product, less laundry, fewer skin complications and their treatment costs, and one to two fewer caregiver wake-ups every night. A single skin-breakdown episode that needs clinic care can erase months of apparent savings from the cheaper route; a systematic review of IAD monetary data found prevention strategies were generally less costly than treating established IAD (Avsar 2021). Where the maths lands depends on your situation, which is why we lay both columns out honestly.

Pros and cons at a glance

Diaper-only route: low upfront cost, familiar, no equipment, works anywhere. Against that: urine sits against skin between changes, higher IAD risk, more night changes, more laundry, and costs climb sharply once skin damage starts.

PureWick system: urine is moved away from skin immediately, fewer night disturbances, drier skin, dignity preserved, no insertion and none of the UTI risk that comes with indwelling catheters. Against that: meaningful upfront cost, nightly consumable cost, needs a power point by the bed, and it manages urine only, so some users still wear light protection as backup.

Who benefits most?

Before settling on any one route it is worth reading our side-by-side comparison of overnight urine management options. The strongest cases are women with heavy night-time urinary incontinence, care recipients who already show early skin redness, households where the caregiver is exhausted by night changes, and anyone trying to avoid moving to an indwelling catheter. If skin is already broken or infections recur, see a doctor or continence nurse first.

EMIS+ is a nurse-led medical supply store in Singapore. Browse the BD PureWick range, or read our guides on how the PureWick system works and why interrupted sleep matters.

Clinical references

1. Gray M, Beeckman D, Bliss DZ, et al. Incontinence-associated dermatitis: a comprehensive review and update. J Wound Ostomy Continence Nurs. 2012;39(1):61-74.
2. Beeckman D, Van Lancker A, Van Hecke A, Verhaeghe S. A systematic review and meta-analysis of incontinence-associated dermatitis, incontinence, and moisture as risk factors for pressure ulcer development. Res Nurs Health. 2014;37(3):204-218.
3. Kayser SA, Phipps L, VanGilder CA, Lachenbruch C. Examining prevalence and risk factors of incontinence-associated dermatitis using the International Pressure Ulcer Prevalence Survey. J Wound Ostomy Continence Nurs. 2019;46(4):285-290.
4. Avsar P, Patton D, Ousey K, et al. Management of incontinence-associated dermatitis: a systematic review of monetary data. Int Wound J. 2021;18(3):341-352.
5. Beeson T, Davis C. Urinary management with an external female collection device. J Wound Ostomy Continence Nurs. 2018;45(2):187-189.
6. Warren C, Fosnacht JD, Tremblay EE. Implementation of an external female urinary catheter as an alternative to an indwelling urinary catheter. Am J Infect Control. 2023;51(6):663-667.

Reviewed by the EMIS+ clinical team. This article is general information, not medical advice; consult your doctor or a continence nurse about your situation.