A rash on the legs can also be caused by an allergic reaction to a variety of allergens (allergic contact dermatitis). Other causes of leg rashes include viral infections, autoimmune disorders, and varicose veins. via
What causes a rash behind the knees?
Atopic dermatitis behind the knees
Atopic dermatitis can cause small, red bumps, which can be very itchy. Atopic dermatitis most often occurs where your skin flexes — inside the elbows, behind the knees and in front of the neck. via
What does a stress rash look like on legs?
Stress rashes often take the form of hives, also called wheals or welts. Hives can appear anywhere on the body. Areas affected by hives are generally red, raised, and swollen. These blotchy areas can be as small as a pencil tip or as large as a dinner plate. via
How do you get rid of a rash on the back of your legs?
What does sepsis rash look like?
People with sepsis often develop a hemorrhagic rash—a cluster of tiny blood spots that look like pinpricks in the skin. If untreated, these gradually get bigger and begin to look like fresh bruises. These bruises then join together to form larger areas of purple skin damage and discoloration. via
How can you tell if a rash is serious?
What does gluten rash look like?
Gluten rash is a chronic, autoimmune skin condition that occurs in people with celiac disease because of gluten sensitivity. Symptoms of a gluten rash include a rash that looks like red, raised skin lesions/blisters, sores that look like hives, and lesions that occur in groups. via
What does the start of a meningitis rash look like?
The meningitis “rash” can start as a blanching rash, but nearly always develops into a non-blanching red, purple or brownish petechial rash or purpura, meaning it will not disappear when pressed. via
When should I worry about a rash?
Painful rashes should quickly be evaluated by a physician. The rash is infected. If you have an itchy rash and you scratch it, it may become infected. Signs of an infected rash are yellow or green fluid, swelling, crusting, pain, and warmth in the area of the rash, or a red streak coming from the rash. via
Can stress cause a rash on legs?
Stress can trigger an outbreak of hives that can make up a stress rash. Hives are raised, red-colored spots or welts. They vary in size and can occur anywhere on the body. Areas affected by hives can feel itchy. via
What does bacterial rash look like?
Bacterial skin infections often begin as small, red bumps that slowly increase in size. Some bacterial infections are mild and easily treated with topical antibiotics, but other infections require an oral antibiotic. via
What can be mistaken for heat rash?
Polymorphic light eruption can be easily mistaken for heat rash (prickly heat). Prickly heat is caused by warm weather or overheating, rather than sunlight or UV light. The skin in prickly heat does not "harden" or desensitise, as it can do in polymorphic light eruption. via
What causes heat rash on lower legs?
Heat rash develops when some of your sweat ducts clog. Instead of evaporating, perspiration gets trapped beneath the skin, causing inflammation and rash. It's not always clear why the sweat ducts become blocked, but certain factors seem to play a role, including: Immature sweat ducts. via
What gets rid of heat rash fast?
What do autoimmune rashes look like?
Autoimmune rashes can look like scaly red patches, purplish bumps, or more. The appearance of autoimmune rashes will be different, depending on which autoimmune condition is triggering the skin rash. For example, cutaneous lupus may cause a scaly red patch that does not hurt or itch. via