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Encyclopedia > Rash
Name of Symptom/Sign:
Rash
Classifications and external resources
A typical rash
ICD-10 R21.
ICD-9 782.1

A rash is a change in skin which affects its color, appearance, or texture. A rash may be localized to one part of the body, or affect all the skin. Rashes may cause the skin to change color, itch, become warm, bumpy, dry, cracked or blistered, swell and may be painful. The causes, and therefore treatments for rashes, vary widely. Diagnosis must take into account such things as the appearance of the rash, other symptoms, what the patient may have been exposed to, occupation, and occurrence in family members. The term symptom (from the Greek meaning chance, mishap or casualty, itself derived from συμπιπτω meaning to fall upon or to happen to) has two similar meanings in the context of physical and mental health: Strictly, a symptom is a sensation or change in health function experienced by a patient. ... In medicine, a sign is a feature of disease as detected by the doctor during physical examination of a patient. ... Image File history File links Download high resolution version (800x633, 60 KB)Rash caused by an unusual reaction File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... The International Statistical Classification of Diseases and Related Health Problems (most commonly known by the abbreviation ICD) provides codes to classify diseases and a wide variety of signs, symptoms, abnormal findings, complaints, social circumstances and external causes of injury or disease. ... The International Statistical Classification of Diseases and Related Health Problems 10th Revision (ICD-10) is a coding of diseases and signs, symptoms, abnormal findings, complaints, social circumstances and external causes of injury or diseases, as classified by the World Health Organization (WHO). ... // R00-R99 - Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R09) Symptoms and signs involving the circulatory and respiratory systems (R00) Abnormalities of heart beat (R000) Tachycardia, unspecified (R001) Bradycardia, unspecified (R002) Palpitations (R008) Other and unspecified abnormalities of heart beat (R01) Cardiac murmurs and other... The International Statistical Classification of Diseases and Related Health Problems (most commonly known by the abbreviation ICD) provides codes to classify diseases and a wide variety of signs, symptoms, abnormal findings, complaints, social circumstances and external causes of injury or disease. ... The following is a list of codes for International Statistical Classification of Diseases and Related Health Problems. ... Beyond overall skin structure, refer below to: See-also. ... Look up texture in Wiktionary, the free dictionary. ... An itch (Latin: pruritus) is an uncomfortable sensation felt on an area of skin that causes a person or animal to desire to scratch that area. ... For the packaging type, see Blister pack. ...


The presence of a rash may aid associated signs and symptoms are diagnostic of certain diseases. For example, the rash in measles is an erythematous, maculopapular rash that begins a few days after the fever starts; it classically starts at the head and spreads downwards. Erythema is an abnormal redness of the skin caused by capillary congestion. ... Maculopapular is a medical term used to describe a unique type of rash. ...

Contents

Causes

Common causes of rashes include:

Uncommon causes: Anxiety is a physiological state characterized by cognitive, somatic, emotional, and behavioral components (Seligman, Walker & Rosenhan, 2001). ... This article needs cleanup. ... Urticaria or Hives is a relatively common form of allergic reaction that causes. ... An infection is the detrimental colonization of a host organism by a foreign species. ... This article is about biological infectious particles. ... This article is about the disease Chickenpox. ... Smallpox (also known by the Latin names Variola or Variola vera) is a contagious disease unique to humans. ... The Herpes simplex virus infection (common names: herpes, cold sores) is a common, contagious, incurable, and in some cases sexually transmitted disease caused by a double-stranded DNA virus. ... toes infection brown with white markings ... This article is about the fungal infection. ... A vaccine is an antigenic preparation used to establish immunity to a disease. ... For the beetle, see Exema. ... Sol redirects here. ... For other uses, see Heat (disambiguation) In physics, heat, symbolized by Q, is energy transferred from one body or system to another due to a difference in temperature. ... The tone or style of this article or section may not be appropriate for Wikipedia. ...

Autoimmune diseases arise from an overactive immune response of the body against substances and tissues normally present in the body. ... Lead poisoning is a medical condition, also known as saturnism, plumbism or painters colic, caused by increased blood lead levels. ... This article is about human pregnancy in biological females. ...

Evaluating a rash

The causes of a rash are extremely broad, which may make the evaluation of a rash extremely difficult. An accurate evaluation by a doctor may only be made in the context of a thorough history (What medication is the patient taking? What is the patient's occupation? Where has the patient been?) and complete physical examination.


Points to note in the examination include:

  • the appearance: e.g., purpuric (typical of vasculitis and meningococcal septiaemia), fine and like sandpaper (typical of scarlet fever); umbilicated lesions are typical of molluscum contagiosum (and in the past, small pox); plaques with silver scales are typical of psoriasis.
  • the distribution: e.g., the rash of scarlet fever becomes confluent and forms bright red lines in the skin creases of the neck, armpits and groins (Pastia's lines); the vesicles of chicken pox seem to follow the hollows of the body (they are more prominent along the depression of the spine on the back and in the hollows of both shoulder blades); very few rashes affect the palms of the hands and soles of the feet (secondary syphilis, rickettsia or spotted fevers,[1] guttate psoriasis, hand, foot and mouth disease, keratoderma blenorrhagica);
  • symmetry: e.g., herpes zoster usually only affects one side of the body and does not cross the midline.

Typically, it is never a good habit for one to scratch their rash; as doing so may invigorate the rash and cause it to spread. Gently rubbing the rash may provide temporary relief, but it is more than likely better to avoid contact with the affected areas altogether. Purple discolorations on the skin caused by bleeding underneath the skin. ... In medicine, vasculitis (plural: vasculitides) is a group of diseases featuring inflammation of the wall of blood vessels due to leukocyte migration and resultant damage. ... Molluscum contagiosum (MC) is a viral infection of the skin or occasionally of the mucous membranes. ... Smallpox (also known by the Latin names Variola or Variola vera) is a highly contagious disease unique to humans. ... In cell biology, a vesicle is a relatively small and enclosed compartment, separated from the cytosol by at least one lipid bilayer. ... Chicken pox, also spelled chickenpox, is a common childhood disease caused by the varicella_zoster virus (VZV), also known as human herpes virus 3 (HHV_3), one of the eight herpesviruses known to affect humans. ... Syphilis is a sexually transmitted disease caused by Treponema pallidum. ... Species Rickettsia felis Rickettsia prowazekii Rickettsia rickettsii Rickettsia typhi Rickettsia conorii Rickettsia africae etc. ... Spotted fever can refer to: Mediterranean spotted fever Rocky Mountain spotted fever This is a disambiguation page: a list of articles associated with the same title. ... Hand, foot and mouth disease (HFMD) is caused by a number of enteroviruses in the family Picornaviridae. ... Herpes zoster, colloquially known as shingles, is the reactivation (from the general area of the spinal cord) of varicella zoster virus (VZV, primary infection of which leads to chickenpox), one of the Herpesviridae group, leading to a crop of painful blisters over the area of a dermatome. ...


Quick Overview of Symptoms of Skin Rashes/Diseases

Skin Disease Symptoms Usual Area of Body
Acne Covered in small pus-filled sacs, blackheads, pimples or sore red bumps Face, Chest or Back
Rosacea Flushed appearance or Redness Around checks, chin, forehead or nose
Boil Painful red bump or a cluster of painful red bumps Anywhere
Cellulitis Red, tender and swollen areas of skin Around a cut, scrape or skin breach
Insect Bites Red and/or itchy bumps on your skin Anywhere and can be sprinked randomly
Allergic Reaction Irregular, raised or flat red sores that appeared after taking medicine/drugs Anywhere
Hives Bumps formed suddenly Anywhere but usually first noticed on face
Seborrheic Dermatitis Bumps and swelling Near glands
Cradle Cap Dry, scaly skin Cover the head of a child
Irritant Contact Dermatitis Red, itchy, scaly or oily rash Eyebrows, nose, edge of the scalp, point of contact with jewellery, perfume or clothing.
Allergic Contact Dermatitis caused by poison ivy, oak or sumac Red, itchy, scaly or oily rash Eyebrows, nose, edge of the scalp, point of contact with jewellery, perfume or clothing.
Allergic Purpura Small red dots on your skin, or larger, bruise-like spots that appeared after taking medicine Anywhere
Pityriasis Rosea Started with a single scaly, red and slightly itchy spot, and within a few days, did large numbers of smaller patches of the rash, some red and/or others tan Chest and Abdomen
Dermatitis Herpetiformis Intensely itchy rash with red bumps and blisters Elbows, knees, back or buttocks
Erythema Nodosum Large red bumps that seem to bruise and are tender to touch Anywhere
Psoriasis White, Scaly rash over red, irritated skin Elbows and knees
Erythema Multiforme Red, blotchy rash, with "target like" hives or sores. Anywhere
Measles Red Rash that is raised with a fever or sore throat. Usually starts first on the forefead and face and spreads downward.
Chickenpox Multiple blisters with a fever, cough, aches, tiredness and sore throat. Usually starts first on the face, cheast and back and spreads downward.
Shingles Red Blisters that are very painful and may crust Anywhere
Fifth Disease Started as a fever and then developed a bright red rash Cheeks
Warts Soft bumps forming that don't itch and have no other symptoms Anywhere
Ringworm Bald spot on your scalp or a ring of itchy red skin Anywhere
Syphilis Rash that is red but not itchy Palms of hands or soles of feat
Jock Itch, Yeast Infection or Diaper Rash Red itchy rash Groin
Tinea Versicolor Light coloured patches Anywhere
Impetigo Crusted, tan-colored sores Near nose or lip
Scabies Bite-like sores that itch and spread intensely Usually start on hands or feet and spread everywhere
Rocky Mountain Spotted Fever A fine rash with a fever and headache Usually start on arms and legs including the hands and feet
Lupus Erythematosus A butterfly rash with achy joints Forehead and cheeks
Jaudice or sign of Hepatitis Yellowish Skin, whites of eyes and mouth
Bruise Blue or black area after being hit Anywhere
Actinic Keratoses Scaly, pink, gray or tan patches or bumps Face, scalp or on the backs or your hands
Keloid or Hypertrophic Scar Scar that has grown larger than expected Anywhere
Lipoma Soft or rubbery growth Anywhere
Milia Lots of whites spots on the face of a baby
Molluscum or Contagiosum Small, firm, round bumps with pits in the center that may sit on tiny stalks Anywhere
Sebaceous Cyst Bump with a white dome under your skin Scalp, nape of your neck or upper back
Skin Tag Soft, fleshy growth, lump or bump Face, neck, armpits or groin
Xanthelasma Yellow area under your skin Under Eyelids
Melanoma Dark bump that may have started within a mole or blemish, or, is there a spot or mole that has changed in color, size, shape or is painful or itchy Anywhere
Basal Cell Carcinoma Fleshy, growing mass Areas exposed to the sun
Squamous Cell Carcinoma Unusual growth that is red, scaly or crusted Face, lip or chin
Kaposi's Sarcoma Dark or black raised spots on your skin that keep growing or have appeared recently Anywhere

Rosacea (IPA: ) is a common but often misunderstood condition that is estimated to affect over 45 million people worldwide. ... Boil or furuncle is a skin disease caused by the inflammation of hair follicles, thus resulting in the localized accumulation of pus and dead tissues. ... Pancreatitus can be caused by an Allergic Reaction to a food. ... Urticaria or Hives is a relatively common form of allergic reaction that causes. ... An infant with Cradle Cap Close up image of Cradle Cap Cradle Cap (Infantile seborrhoeic dermatitis, or crusta lactea, milk crust, honeycomb disease; croûte de lait, eczéma infantile, dermatite atopique infantile (French); ne shqip njihet si - rrjebull ose rrjebulla (Albanian); crosta lattea (Italian); and σμηγματόρροια του τριχωτού της κεφαλής των νεογνών (Greek)) is a patchy... Pityriasis rosea is a skin disease marked by patches of pink, oval rash. ... This article is about the disease Chickenpox. ... Herpes zoster, colloquially known as shingles, is the reactivation of varicella zoster virus, leading to a crop of painful blisters over the area of a dermatome. ... Fifth disease is also referred to as erythema infectiosum (meaning infectious redness) and as slapped cheek syndrome, slap face or slapped face. ... Wart is also the name of a Nintendo character, see Wart (Nintendo character). ... This article is about the fungal infection. ... Syphilis is a sexually transmitted disease caused by Treponema pallidum. ... Binomial name Wolbach, 1919 Rocky Mountain spotted fever is the most severe and most frequently reported rickettsial illness in the United States, and has been diagnosed throughout the Americas. ... Hepatitis (plural hepatitides) implies injury to liver characterised by presence of inflammatory cells in the liver tissue. ... A bruise or contusion or ecchymosis is a kind of injury, usually caused by blunt impact, in which the capillaries are damaged, allowing blood to seep into the surrounding tissue. ... A keloid is a special type of scar which results in an overgrowth of tissue at the site of a healed skin injury. ... A lipoma is a common, benign tumor composed of fatty tissue. ... Milia, also known as milk spots, are benign, keratin-filled cysts that can appear just under the epidermis or on the roof of the mouth. ... Molluscum contagiosum (MC) is a viral infection of the skin or occasionally of the mucous membranes. ... Skin tag on adult females upper cheek. ... Xanthelasma (or xanthelasma palpebrarum) are sharply demarcated yellowish collections of cholesterol underneath the skin, usually around the eyes. ... Melanoma is a malignant tumor of melanocytes which are found predominantly in skin but also in the bowel and the eye (see uveal melanoma). ... Basal cell carcinoma (BCC) is the most common skin cancer. ... Biopsy of a highly differentiated squamous cell carcinoma of the mouth. ...

See also

Dermatology (from Greek δερμα, skin) is a branch of medicine dealing with the skin and its appendages (hair, ass, sweat glands etc). ... Dermatology is a branch of medicine dealing with the skin, its structure, functions, and diseases (from Greek derma, skin), as well as its appendages (nails, hair, sweat glands). ... Dermatitis is a blanket term literally meaning inflammation of the skin. It is usually used to refer to eczema, which is also known as Dermatitis eczema. ... Contact dermatitis is a term for a skin reaction resulting from exposure to allergens or irritants. ... This article is about the fungal infection. ... Binomial name Toxicodendron radicans (L.) Kuntze Poison-ivy (Toxicodendron radicans or Rhus toxicodendron), in the family Anacardiaceae, is a woody vine that is well-known for its ability to produce urushiol, a skin irritant which for most people will cause an agonizing, itching rash. ... Species See text. ... Binomial name L. The stinging nettle (Urtica dioica) is a herbaceous flowering plant, also known in the United States as 7-minute-itch, native to Europe, Asia, northern Africa, and North America, and is the best known member of the nettle genus Urtica. ... Not to be confused with malaria Miliaria (miliaria rubra, sweat rash or prickly heat) is a skin disease marked by small and itchy rashes. ... For a person to flush is to become markedly red in the face and often other areas of the skin, from various physiological conditions. ... Erythema is an abnormal redness of the skin caused by capillary congestion. ...

References

  1. ^ Boyd MA, Menon P, Graves S, Gordon DL (2007). "A febrile illness with generalized papular rash involving the palms and soles". Clin Infect Dis 44: 755–756. 

External links

Look up Rash in
Wiktionary, the free dictionary.

  Results from FactBites:
 
Rash - Wikipedia, the free encyclopedia (286 words)
A rash may be localised to one part of the body, or affect all the skin.
Rashes may cause the skin to change color, itch, become warm, bumpy, dry, cracked or blistered, swell and may be painful.
Not only the appearance and sensation of the rash but also the distribution (which parts of the body are affected and where it arose and spread to) and evolution of the rash may be important as certain patterns of rashes and their associated signs and symptoms are diagnostic of certain diseases.
Rash (1669 words)
A rash is a temporary eruption or discoloration of the skin that is often inflamed or swollen.
In general, rashes may be described as macular (showing flat, red spots), papular (showing small, raised, solid bumps), macular and papular (a combination of macules and papules), papulosquamous (a combination of papules and scaly areas), and vesicular (showing small, raised, fluid-filled blisters).
Rashes due to an antibiotic allergy may last three to 14 days, whereas diaper rash almost always clears up within one week (if diapers are changed frequently).
  More results at FactBites »

 
 

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