Skin Rashes in Children on Face in Adults on Hands on Arms that Itch In Kids on Dogs on Chest: Itchy Skin Rash Pictures Skin Rashes In Children On Face In Adults On Hands On Arms That Itch In Kids On Dogs On Chest On Neck

Itchy Skin Rash Pictures Biography

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Whether a rash itches or not is often an important clue to knowing what kind of rash you have. The following are common itchy rashes.

Psoriasis:
Psoriasis affects 2.2% of the United States population and 1% to 3% of the world's population. It's a chronic skin disorder that is characterized by periodic flare-ups of well defined, red patches covered by a silvery, flaky skin on the extensor surfaces and the scalp.
Part of the reason psoriasis is such a complicated disease is that there are several different types of psoriasis. A person with psoriasis can have one or more of them, and the type could change throughout the person's lifetime.
Examples of the types of psoriasis include:
Plaque psoriasis
Scalp psoriasis
Nail psoriasis
Inverse psoriasis
Guttate psoriasis
Pustular psoriasis
Each type of psoriasis has a particular appearance, but there are characteristics of the rash that are shared by the majority of the types:
Thick, silvery scales on a very red base
Sharply outlined borders; the difference between normal skin and rash is distinct
Healing from the inside out, resembling ringworm
There are numerous treatment options for psoriasis, some of which have been around for decades and others for less than 5 years. The majority of psoriasis cases can be treated with medications you apply to the skin (topicals), but the more severe cases may require oral or injected medicine.

Pityriasis Rosea:
Pityriasis rosea is a common, self-limited rash that typically occurs in healthy adolescents and young adults. The appearance of the rash is striking and often causes concern to the bearer and family, but it truly does resolve on its own.
Often the rash starts with a " herald patch " -- a single, 2- to 10-cm round/oval lesion which can occur anywhere but often shows up on the trunk. The herald patch often looks like ringworm . Within a few days to several weeks, smaller lesions appear mainly on the trunk but can spread to the arms, legs, and face. On light skin, the lesions are salmon-colored, and on dark skin they are hyperpigmented . These eruptive lesions are typically oval and the long axis of the oval is oriented along skin lines. A fine, tissue-like scale stays attached to the border of the lesion. A typical eruption lasts six to eight weeks, but it can persist for five months or more. The lesions may be very itchy.
Pityriasis rosea is diagnosed clinically, based on the typical appearance of the rash. If the rash is not typical, pityriasis rosea can be confused with ringworm , psoriasis , nummular eczema , and syphillis. Often a KOH test will be done to rule out ringworm and a blood test identifies syphillis. In rare cases, a lesion may need to be biopsied.
It is unclear whether pityriasis rosea is contagious, but isolation is not recommended. Few good studies have been conducted to assess treatment options. One study showed that high dose erythromycin for two weeks may shorten the course. Lesions exposed to direct sunlight resolve faster than those in unexposed areas. Ultraviolet light B (UVB) therapy may reduce itching and speed resolution lesions but therapy is most beneficial during the first week of the eruption. Oral antihistamines and topical steroids may help with itching.

Poison Ivy:
Poison ivy is known in medical terms as Rhus Dermatitis which is a type of contact dermatitis. As the name implies, a contact dermatitis is an irritation of the skin caused by contact with a specific irritant. In the case of poison ivy, the irritant is called urushiol which is a resin found in the plants in the Anacardiaceae family and the Rhus genus. Plants included in this classification are poison ivy, poison oak, and poison sumac. Also included are the cashew nut tree, mango tree, Japanese lacquer tree, and marking nut tree.

Chicken Pox:
Chicken pox is a highly contagious viral infection caused by the varicella virus. The word chickenpox comes from the Old English word "gican" meaning "to itch" or from the Old French word "chiche-pois" for chickpea, a description of the size of the lesion.
Chickenpox is a disease of childhood - 90% of cases occur in children aged 14 years and younger. Before widespread vaccination, the incidence of chicken pox in the United States approached the annual birth rate, averaging between 3.1 and 3.8 million cases per year. Chicken pox can occur at any time, but occurs most often in March, April, and May in temperate climates.
Chicken pox is acquired by direct contact with infected blister fluid or by inhalation of respiratory droplets. When a person with chicken pox coughs or sneezes, they expel tiny droplets that carry the varicella virus. A person who has never been exposed to chicken pox inhales these droplets and the virus enters the lungs, and then is carried through the bloodstream to the skin where it causes a rash. While the virus is in the bloodstream (before the rash begins) it causes typical viral symptoms like fever, fatigue, joint pains, headache, and swollen glands. These symptoms usually resolve by the time the rash develops. The incubation period of chicken pox averages 14 days with a range of 9 to 21 days.
The chicken pox rash begins on the trunk and spreads to the face and extremities. The chicken pox lesion starts as a 2-4 mm red papule which develops an irregular outline (rose petal). A thin-walled, clear vesicle (dew drop) develops on top of the area of redness. This "dew drop on a rose petal" lesion is very characteristic for chicken pox. After about 8-12 hours the fluid in the vesicle gets cloudy and the vesicle breaks leaving a crust. The fluid is highly contagious, but once the lesion crusts over, it is not considered contagious. The crust usually falls off after 7 days sometimes leaving a craterlike scar. Although one lesion goes through this complete cycle in about 7 days, another hallmark of chicken pox is the fact that new lesions crop up every day for several days. Therefore, it may take about a week until new lesions stop appearing and existing lesions crust over. Children are not sent back to school until all lesions have crusted over.

Atopic Dermatitis:
Atopic dermatitis is the most common type of eczema, and it is caused by an abnormal response to the body's immune system. The term "atopic" or "atopy" is used to describe a group of diseases that commonly occur together and run in families. These diseases are asthma, hay fever ( allergic rhinitis ), and atopic dermatitis.
The cause of atopic dermatitis is hotly debated. Several factors play a role in the disease such as "leaky skin," abnormalities in several specific cells in the immune system , allergies, and higher sensitivity to chemicals and clothing. But so far the cause has not been narrowed to one particular factor.
topic dermatitis is diagnosed based several clinical factors that are divided into major and minor features. Skin-prick allergy tests are not used routinely to make the diagnosis because they are not as accurate in people with atopic dermatitis.

Hives:
The skin condition we call hives is referred to in medical terms as urticaria. A hive, or wheal, is a symptom of urticaria. However, most people do not develop one hive when they have urticaria, hence the name hives.
Urticaria is a common condition that can affect any person of any race at any age in any season of the year. It occurs in up to 20% of the population at one time or another. Hives can occur on any skin surface, but usually spare the palms and soles of the feet. Hives are classified as acute or chronic depending on the length of the episode.
A hive, or wheal, is a circular, red, spongy lesion that evolves and changes over minutes to hours. It is usually surrounded by an area of redness called a flare. Hives can vary in size from a few millimeters to giant hives covering a whole extremity.

Ringworm:
Ringworm, known in medical terms as tinea corporis, is actually not caused by a worm, but by a fungus. Tinea corporis refers to a fungal infection of the body or face, not including the beard area on men. Ringworm occurs more commonly in warm, tropical environments, affects men and women equally, and affects all ages equally.
The most common appearance of ringworm is a lesion that starts as a flat, scaly spot which then develops a raised border that advances outward in a circle. The advancing border is red, raised, and scaly while the central area is more normal appearing, usually still with fine scaling. Some ringworm infections, especially those treated with a steroid like hydrocortisone, can have vesicles or pustules in the advancing border or in the center.

Athlete's Foot:
The feet are the most common area infected by certain fungi called dermatophytes, causing tinea pedis or athlete’s foot. Athlete’s foot is a very common problem experienced by up to 70% of the population at some time in their life.
Athlete’s foot is common in adult males, but uncommon in women. Athlete’s foot can also affect children before puberty, regardless of sex. Athlete’s foot seems to occur most often in people who have some characteristic of their immune system which predisposes them to infections regardless of the precautions they take to prevent infection. Once an infection is established, the person becomes a carrier and is more susceptible to recurrences and complications.