Raised red lines after light scratching may be dermatographism. Learn common triggers, home care, treatment options, and when to see a dermatologist.
Tag: Rashes
Why Are There Tiny Skin-Colored Bumps on My Genitals?
Tiny genital bumps may have harmless or infectious causes. Learn common possibilities, what to avoid, and when to see a dermatologist.
Why Do I Get Tiny, Itchy Bumps on My Arms After Being in Sunlight? (PMLE)
Tiny, itchy bumps after sunlight may be linked to PMLE. Learn what can trigger this sun-sensitive rash, what may help, and when to see a dermatologist.
Papular Urticaria: Why Bug Bites Cause Long-Lasting Itchy Bumps
Learn why papular urticaria can make bug bites stay itchy for days or weeks, what may trigger it, and when a dermatologist should evaluate the rash.
Why Does My Skin Leave a White Mark After I Press on It? (Dermographism)
A white mark after pressing the skin may be temporary blanching or a form of dermographism. Learn what these reactions can mean and when to get checked.
Why Is the Skin Between My Buttocks Itchy and Raw?
Itchy, raw skin between the buttocks may come from moisture, friction, irritation, inflammation, or infection. Learn what can help.
Why Do I Get Crusty Sores Inside My Nostril That Won’t Heal?
Crusty sores inside a nostril may come from irritation, inflammation, or infection. Learn why they recur and when a dermatologist should check them.
Why Does My Navel Have an Unpleasant Smell and a Crusty Discharge? (Omphalitis)
Learn what may cause a foul-smelling, crusty belly button discharge, how to care for the area, and when a dermatologist should evaluate it.
Why Do I Have Tiny, Tender, Fluid-Filled Bumps on My Hands After Washing Dishes?
Tiny fluid-filled bumps after washing dishes may be related to hand eczema, irritation, or dyshidrotic eczema. Learn what may trigger them.
What Are These Wart-Like Bumps on My Hands and Feet That Aren’t Warts? (Acrokeratosis Verruciformis)
Acrokeratosis verruciformis can cause flat, wart-like bumps on the hands and feet. Learn what they may look like and when to see a dermatologist.

