Rash | Allergy


by Allergy Guy

A rash is when the skin changes colour, appearance or texture. It is often itchy or painful, but sometimes you can not feel that you have a rash.

A rash, together with other symptoms, can be used to diagnose specific diseases.

Some conditions, such as poison ivy have characteristic rashes that strongly indicate the likely cause of the rash.

Another example is measles, which has a rash starting a few days after the onset of a fever, and usually starts at the head and spreads down the body.

Visible Signs of a Rash

  • Change of skin color
  • Itchy skin
  • Hot or warm sensation on skin
  • Bumpy skin
  • Dry skin
  • Cracked skin
  • Blistered skin
  • Swollen skin
  • Painful skin

Common Rash Causes

  • Anxiety
  • allergies (called hives)
  • Skin contact with an irritant
  • Bacterial infection
  • Viral infection (e.g. chickenpox, smallpox, cold sores and measles)
  • Fungal infection (e.g. ringworm)
  • Vaccinaion reaction
  • Eczema (itself a symtom of some other disorder, ofteh unexplained by doctors)
  • Acne
  • Sunburn
  • Heat
  • Friction, chafing of the skin
  • Irritation by abrasives in clothing
  • Irritation by some types of rough cloth

Uncommon Rash Causes

  • Autoimmune disorders (e.g. psoriasis)
  • Lead poisoning
  • Pregnancy

ICD-10: Rr20.htm+ r21 21
ICD-9 782.1

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{ 2 comments… read them below or add one }

1 chaitali April 16, 2011 at 19:21

I get rashes all over my body when ever i do any kind of physical activity continously for sometime, or when i stress out worrying about on some things. I can feel the heart palpitation in my head. Whole body gets heated up with red rashes. If i discontinue and take rest the rashes subsides and body feels a bit chill and become normal in 15-20mins. But if i continue doing physical activity , the rashes swells out more, my head feels likes brusting up, though my eyes remain open but i cant see anything, i faint and regain consiousness when i cool down a bit.


2 Stephanie Kin April 16, 2010 at 13:22

I have been having significant breakouts around my mouth, chin, etc. My esthetician feels strongly that it is a food allergy/sensitivity. After researching the issue myself, I definitely have to agree. I am starting with the elimination of dairy and nuts. Does anyone have any thoughts/experiences on what may cause acne breakouts that may be related to allergies? I did see the info on wine allergy and I am going to be crushed if it is wine related! Thanks so much!


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