Inverse Psoriasis vs Candidal Intertrigo

Psoriasis of skin folds, also called flexural psoriasis. Yeast infection affecting an inflamed skin fold.

Research updated 2026-10-23

Educational illustration of a representative inflamed skin crease with small surrounding satellite bumps in an anonymous skin close-up on light skin.

Key differences What is it?What it looks like Diagrams When it starts Triggers Daily Care Treatment Outlook Complications When to get help Questions

Key differences

The same eight facts on every condition comparison.

Usual age

Any age

Where

Armpits, groin, under breasts, buttock crease

Armpits, groin, under breasts

Main sign

Smooth, shiny red patches

Red, moist fold rash with satellite spots

Itch or pain

Itchy, sore

Itchy or sore

Contagious

Long term

Long-term; flares

Clears; returns if folds stay damp

Scars

Who gets it

People with psoriasis

Diabetes, heat, larger body size

What is it?

Inverse Psoriasis

Candidal Intertrigo

What is it?

What it is
Psoriasis of skin folds, also called flexural psoriasis.

What it is
Yeast infection affecting an inflamed skin fold.

What it looks like

Inverse Psoriasis

A raised arm revealing a broad smooth red patch in the underarm fold.

Inverse Psoriasis A clearly outlined area of redness lies within the underarm.

Candidal Intertrigo

A model of a skin fold with a red central crease and separate small red bumps nearby.

Candidal Intertrigo A bright red crease is surrounded by smaller scattered spots.

Skin tones

Educational illustration of a representative inflamed skin crease with small surrounding satellite bumps in an anonymous skin close-up on medium skin.

Educational illustration of a representative inflamed skin crease with small surrounding satellite bumps in an anonymous skin close-up on brown skin.

Educational illustration of a representative inflamed skin crease with small surrounding satellite bumps in an anonymous skin close-up on deep skin.

In the skin

Psoriasis-related immune inflammation affects skin folds and speeds cell turnover. Moisture and rubbing can leave the patches smoother and less scaly than plaques elsewhere.

Candida yeast overgrows in a warm, moist skin fold with a weakened barrier. The yeast and the immune response add inflammation to the damaged skin.

When it usually starts

010203040506070+

Inverse Psoriasis. Can start at any age, with different patterns at different life stages.

Candidal Intertrigo. Can occur whenever skin remains damp and occluded.

Causes and triggers

Causes

Immune inflammation speeds skin-cell turnover; psoriasis is not contagious.

Candida overgrows in a damaged moist fold.

Risk factors

Family tendency, Immune susceptibility

Moisture, Diabetes, Immune suppression

Trigger

● Inverse Psoriasis

● Candidal Intertrigo

Friction

Can contribute

Sweating

Can contribute

Skin injury

Can contribute

Not listed

Prolonged dampness

Not listed

Can contribute

Daily Care

Inverse Psoriasis

Candidal Intertrigo

Daily care

Habits that help

Moisturize regularly with a plain fragrance-free product
Apply after washing and when skin feels dry or tight.
Keep washing gentle and water lukewarm
Use a non-soap cleanser and pat dry rather than rubbing.
Protect sore skin from friction and minor injury
Comfortable clothing and gentle handling reduce avoidable irritation.
Keep a manageable record of flares and symptoms
Note new medicines, infections or joint symptoms to discuss at review.
Keep folds gently clean, cool and dry
Pat dry after washing, change damp clothing and avoid prolonged rubbing or unsupervised strong steroid use in folds.
Follow the inverse psoriasis care plan
Keep folds gently clean and dry, reduce rubbing and use a site-specific prescription.

Avoid

Avoid: Picking scale or scratching plaques
Injury can worsen psoriasis and create breaks in the skin.
Avoid: Unsupervised tanning or harsh home exfoliation
Sunburn and irritation can trigger worsening; prescribed phototherapy is different from tanning.

Habits that help

Clean skin folds gently and dry them completely
Pat dry; a cool hairdryer held safely away can help with difficult-to-reach folds.
Change damp clothing and underwear promptly
Choose loose, breathable fabrics to reduce heat and moisture.
Reduce rubbing between skin surfaces
A soft, clean absorbent layer may help; replace it when damp.
Keep the area cool during activity
Wash or rinse after heavy sweating and dry well afterwards.
Follow the prescribed antifungal plan alongside moisture control
Seek advice about contributing problems such as diabetes or recurrent infection.

Avoid

Avoid: Vigorous scrubbing and fragranced products
Irritation makes an already sore fold harder to heal.
Avoid: Treating every fold rash with a steroid alone
Yeast or bacterial infection may need specific treatment and persistent rash needs assessment.

Treatment differences

Evidence labels come from each condition’s own treatment list.

Treatment

● Inverse Psoriasis

● Candidal Intertrigo

Over-the-counter

None listed

Clotrimazole or another topical antifungal

Listed

Treats Candida in a suitable formulation; follow clinician or local product advice.

Prescription topicals

Site-specific anti-inflammatory treatment

Listed

A brief mild steroid or a steroid-sparing agent may be selected for face, folds or genital skin; avoid potent body steroids without guidance.

None listed

Outlook

Long term

Fold psoriasis tends to recur even after treatment clears the skin. Reducing friction and using a site-appropriate treatment plan can help maintain control.

Yeast-related fold rash can improve with appropriate antifungal treatment and moisture control. Recurrence is possible when the folds remain damp or another contributing factor persists.