What should you know about underarm crepey skin?

The underarm is a fold exposed to movement, sweat, friction, shaving, and repeated stretching. Dryness can make fine lines more visible. Reduced collagen and elastin with age can also leave the surface less firm. Sun exposure may contribute even when the area is usually covered; see Sun-Damaged Skin for background on photoaging.

Crepey texture is different from a new lump, a persistent rash, or a wound. A clinician can examine the skin and distinguish lax texture from inflammation or another dermatology concern.

Use a fragrance-free moisturiser after bathing and pat the fold dry rather than rubbing it. Choose breathable clothing, reduce repeated friction, and pause shaving or products that sting if they make the texture worse. Avoid aggressive scrubs and unlabelled lightening or tightening products.

If laxity remains bothersome, a dermatologist may discuss radiofrequency skin tightening, which uses controlled heat to encourage remodelling in deeper skin layers. Suitability depends on skin thickness, laxity, medical history, and the device used.

Arrange an examination if the change is sudden, one-sided, painful, itchy, bleeding, ulcerated, or accompanied by a persistent rash, swelling, or a firm area. Seek prompt care for rapidly worsening redness, warmth, drainage, or fever. A clinician should also review texture that does not settle after irritants are removed.

Could dryness, friction, photoaging, or another skin condition explain this texture? Would moisturising alone be reasonable? If radiofrequency is considered, what device, risks, recovery, and number of visits fit my skin?