What Diseases Cause Skin Rashes?

Skin rashes can occur from a variety of factors, including infections, heat, allergens, immune system disorders and medications.

One of the most common skin disorders that causes a rash is atopic dermatitis (ay-TOP-ik dur-muh-TI-tis), also known as eczema.

How do you know if a rash is serious?

If the skin rash comes with other symptoms, it could indicate something serious.

Signs that your rash needs to be looked at by a medical professional:

  • If you have a fever or pain accompanying the rash.
  • If you have a sudden spreading of bruise-like lesions.
  • If your rash continues unabated.
  • Any rash that is widespread.

What can a rash be a sign of?

Rash is not a specific diagnosis. Instead it refers to any sort of inflammation and/or discoloration that distorts the skin’s normal appearance. Common rashes include eczema, poison ivy, hives, and athlete’s foot. Infections that cause rashes may be fungal, bacterial, parasitic, or viral.

What does a cancer rash look like?

Often a red rash that could be cancer looks very similar to those caused by psoriasis or eczema, experts warned. They can cause red patches, itching, burning and dry, scaly skin. Raised blueish or yellow bumps may also appear. “If you treat the cancer, the rash goes away.

What does stress rash look like?

Stress rashes often take the form of hives, also called wheals or welts. 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. Sometimes these patches may connect to form even larger welts.

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