Diaper rash (or diaper dermatitis) is the most common skin condition in newborn babies and infants.⁴ It can also develop in anyone who regularly wears a diaper, such as an incontinent adult.^2,14 A yeast diaper rash, also known as Candida diaper dermatitis, is a type of diaper rash that results from the overgrowth of yeast, specifically Candida albicans.¹ 

The skin surface, digestive system, and genital area typically have a natural balance of yeast and beneficial bacteria.¹⁴ However, when this balance is disrupted and the yeast proliferates, it can lead to a yeast diaper rash.

What are the symptoms of a yeast diaper rash?

A yeast diaper rash presents well-defined, bright red bumps in the diaper region. The rash can appear shiny, with slightly raised borders, and is typically seen in the skin folds of the groin area.³ A characteristic feature of a yeast diaper rash is the presence of small, red, isolated dots, known as satellite lesions, which surround the main part of the rash.⁷

How is a yeast diaper rash diagnosed?

Unlike a regular diaper rash, a yeast diaper rash lasts longer than three days and will not respond to simple home remedies or typical diaper rash creams.⁷ A healthcare provider will diagnose a yeast diaper rash after conducting a visual examination of the area and assessing the symptoms, duration, and severity.

The healthcare provider may also inquire about any medications that the diaper-wearing individual or breastfeeding mother (if the patient is a young infant) has taken, as these could disrupt the balance of yeast in the body.¹

What could be mistaken for a yeast diaper rash?

Following are some of the conditions that may be mistaken for a yeast diaper rash:⁵

• Bacterial infection
• Allergic dermatitis
• Irritant contact dermatitis
• Atopic dermatitis
• Psoriasis

What are the causes and risk factors of yeast diaper rash? 

Some of the factors that increase the risk of developing a yeast diaper rash include:^1,6,8,9

• Damage to the skin barrier¹⁵
• A warm and humid environment, which allows yeast overgrowth¹⁴
• Friction caused by the diaper rubbing against the skin
• Excessive moisture from prolonged contact with urine or faeces
• Diapers that are too tight, which allow little to no air circulation
• Diarrhoea or frequent bowel movements
• Antibiotic use can disrupt the balance between beneficial bacteria and yeast in the diaper-wearing individual or in the breastfeeding mother¹⁵

How do you treat a yeast diaper rash?

A yeast diaper rash cannot be cured using standard diaper rash creams but can be treated with over-the-counter antifungal creams like clotrimazole, which can help to treat the yeast rash and stop its overgrowth.¹ If the affected area is inflamed, the patient may be prescribed a combination cream containing an antifungal and an anti-inflammatory agent, such as clotrimazole and hydrocortisone.³

When cleaning the diaper area, use plenty of warm water, and gently pat the area dry or allow it to air dry. It is important to clean the creases thoroughly and avoid rubbing, as it can aggravate the rash.¹¹ Avoid the use of fragranced soaps, bubble baths, baby products containing alcohol or other harsh chemicals and even baby wipes until the rash has cleared completely.³

What is the prognosis for yeast diaper rash?

A yeast diaper rash responds well to antifungal treatment and usually starts to fade within three days of beginning treatment. The rash is often completely cleared within two to three weeks.³ However, it is important to follow the doctor’s instructions and adhere to the treatment plan to prevent reinfection.

What are the complications of a yeast diaper rash?

Early intervention is crucial, as a yeast diaper rash can worsen if left untreated. The rash may start to bleed, ooze pus, or turn into an open sore.¹ A break in the skin also increases the risk of developing more serious bacterial infections, such as impetigo.⁷ Rarely, the infant or diaper-wearing individual may develop a fever. If the patient is immunocompromised, the yeast could proliferate and become a systemic issue.¹⁷ In such cases, seek medical attention immediately.

How do you prevent a yeast diaper rash?

Once the infection is cleared, the following measures can be taken to prevent the recurrence of yeast diaper rash:^8,9

• Apply a thin layer of protective cream all over the diaper area
• Keep the diaper area clean and dry
• Allow for daily diaper-free time to let the skin breathe
• Change diapers frequently to minimise moisture
• Ensure the diapers are neither too tight nor too loose
• Avoid relying solely on baby wipes to clean the diaper area; opt for warm water or unscented baby wipes

FAQs

What is the difference between a regular diaper rash and a yeast diaper rash?

A diaper rash is usually caused by friction, skin sensitivity, excessive moisture, or prolonged contact with urine or faeces. It typically resolves within 2 or 3 days with diaper rash creams. However, if it lasts for more than three days, it could be linked to an infection, either bacterial or fungal. Over 80% of diaper rash cases have been reported to be complicated by secondary yeast infections.¹⁰ When a yeast overgrowth is responsible for the diaper rash, it is known as a yeast diaper rash.¹⁰

How can you distinguish between a diaper rash and a yeast diaper rash?

A regular diaper rash typically has an area of uniform redness, while a yeast diaper rash presents with well-defined, reddish, shiny bumps with slightly raised borders. A yeast diaper rash also has additional smaller lesions near the main rash, known as satellite lesions.⁷

A regular diaper rash usually appears on larger surfaces in contact with the diaper, whereas a yeast diaper rash is more likely to appear in the skin folds.¹ 

What makes one more susceptible to a yeast diaper rash?

The following are some of the factors that make someone more susceptible to a yeast diaper rash:

• A pre-existing diaper rash that does not get treated promptly¹⁶
• Having large skin folds¹⁴
• A change in food habits in babies, such as introducing solid foods, can alter the composition of their stool²
• Frequent bowel movements or diarrhoea, leading to skin irritation and excessive moisture²
• Taking antibiotics that disrupt the balance of healthy bacteria and yeast in the body¹³

Summary

Diaper rash (diaper dermatitis) is a skin condition commonly seen in babies and infants. When yeast overgrowth is the cause of a diaper rash, it is called a yeast diaper rash (or candida diaper dermatitis). A pre-existing diaper rash with a compromised skin barrier is also frequently complicated by a secondary yeast infection. While a diaper rash typically resolves within three days, a yeast diaper rash lasts longer and does not go away despite using regular diaper rash creams.

Excessive moisture from prolonged contact with urine or faeces, friction caused by tight-fitting diapers, and poor air circulation are some of the factors that facilitate the overgrowth of yeast. A yeast diaper rash can be treated using over-the-counter antifungals like clotrimazole. A more severe rash may require a corticosteroid and an antifungal combination cream, such as hydrocortisone and clotrimazole. Promptly treating a yeast diaper rash also helps to prevent complications like secondary bacterial infections. 

Measures to prevent recurrent yeast infections include applying a thin layer of barrier ointment on clean, dry skin with each diaper change, cleaning the diaper area with warm water or unscented baby wipes, avoiding baby products with fragrances, harsh chemicals, or alcohol, frequently changing diapers, and allowing for daily diaper-free time.