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

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There are many types of skin rashes. A rash is an outbreak of many red bumps or patches on the body. Many conditions can cause an itchy rash. In adults, several types of skin inflammation, various allergic reactions (contact dermatitis), and sometimes infection with a mite or virus can be the cause of a new rash on the skin. Determining that the skin change is recent (generally happening for the first time and lasting less than 1-2 weeks) helps to narrow the possible causes for the rash. The location on the body and the extent of the rash can also help determine a cause. Limited areas of involvement may indicate shingles (zoster), a poison ivy rash or other allergic and irritant contact dermatides, while widespread distribution is typical of drug reactions, hives (urticaria), viral infections, and scabies.
Most skin rashes are not dangerous to others unless they are caused by an infectious disease, such as shingles or scabies. Many rashes go away on their own after some time has passed. It is often reasonable to watch a slightly itchy rash for a few days to see whether the condition gets a little better and goes away on its own. here are some skin rashes that itch:

Allergic Contact Dermatitis:
Allergic contact dermatitis is a delayed hypersensitivity reaction (the reaction to the allergen occurs 48–72 hours after exposure). The most common allergens causing allergic contact dermatitis often change with time, as certain chemicals come in or out of use in the manufacture of products that come in contact with the skin. Most recently, common causes of allergic contact dermatitis include nickel, chromates, rubber chemicals, and topical antibiotic ointments and creams. Frequent sensitizers in the general population also include fragrance, formaldehyde, lanolin (wool grease found in ointments and cosmetics), and a host of other common environmental chemicals.
1.Nickel is found in jewelry, belt buckles, metal closures on clothing, and some cell phones.
2.Chromates are used in the process of tanning leather for shoes and in cement, so they can affect construction workers who are in contact with cement.
3.Rubber chemicals are found in gloves, balloons, elastic in garments, mouse pads, and swim goggles.
4.Neomycin is common in triple antibiotic first aid ointments such as Neosporin® (and generic versions of Neosporin) as well as other combination preparations with other antibacterials (eg, Polysporin®). It may also be found in eye preparations and eardrops. Bacitracin is a common ingredient in antibiotic ointments and creams and can cause allergic contact dermatitis as well.
5.Common allergen-containing products include cosmetics, soaps, dyes, and jewelry.
6.Poison ivy is a frequent cause and is discussed separately.

Irritant Contact Dermatitis:
Irritant contact dermatitis is an inflammatory rash caused by direct chemical injury to the skin. Unlike allergic contact dermatitis, which appears 48–72 hours after exposure to an allergen, the symptoms of irritant contact dermatitis can result within a few hours if the exposure is a strong irritant.
1.Patients typically present complaining of a burning or stinging early in the course of irritant contact dermatitis.
2.As the irritation becomes chronic and the skin becomes continually inflamed, itching can become a predominant symptom.

Poison Ivy, Oak, and Sumac:
Poison ivy, poison oak, or poison sumac dermatides are all reactions to the oil (called urushiol) found on the leaves, stems, and roots of poison ivy, poison oak, and poison sumac plants.
1.People typically have itchy bumps (papules) and blisters (vesicles).
2.Itching can be intense, and secondary bacterial infection can result from scratching.
3.Scratching does not spread lesions; the lesions with the most antigen appear first and then, as the immune response increases, lesions with less antigen begin to erupt.
4.Skin lesions usually begin to appear after 48 hours of initial exposure.
5.Symptoms are usually related to severe itching.

Drug Eruption, Unclassified:
A drug rash (drug eruption), also known as a drug reaction, is a skin condition caused by a medication. A drug rash can appear in many forms, and any medication can cause a drug rash.

Pityriasis Rosea:
Pityriasis rosea (PR) is a common non-cancerous (benign) rash that mostly affects the back, chest, and abdomen. It starts fairly quickly, lasts about 6–8 weeks, and is usually not itchy.
The cause of pityriasis rosea is not known, though it may be caused by infection with an unknown virus.

Scabies:
Scabies is an infestation of the skin caused by a tiny mite called Sarcoptes scabiei var. hominis. Scabies is very contagious and spreads rapidly in crowded areas such as hospitals, nursing homes, child care facilities, prisons, and other locations where people spend extended periods of time in close contact with one another.
The rash of scabies is extremely itchy and develops when a pregnant female mite burrows into the skin and lays her eggs. The human immune system is very sensitive to the presence of the mite and produces an allergic response that causes intense itching. Although a person who is infested with scabies usually only has 10–20 mites on his or her entire body, there may be a large number of lesions because of this allergic response. Without treatment, the condition will not usually improve.

Viral Exanthem:
Viral exanthem, also known as non-specific viral rash, is a rash caused by a viral infection. Many viruses can cause a similar-appearing rash, so it is difficult to tell which one is the culprit. Your age, duration of illness, and other symptoms may suggest which virus is the cause. Respiratory and stomach (gastrointestinal) viruses are common causes of such a rash.

Hives (Urticaria):
Hives (urticaria), also known as welts, is a common skin condition with an itchy rash of pink to red bumps that appear and disappear anywhere on the body. An individual lesion of hives typically lasts a few hours (up to 24 hours) before fading away, and new hives can appear as older areas disappear.
Physicians arbitrarily divide hives into acute (new or periodic episodes lasting fewer than 6 weeks) and chronic (periodic episodes lasting more than 6 weeks). Though many people have a single episode of acute hives that goes away within a few days to weeks, some individuals may have chronic hives that persist intermittently for years. More often than not, the offending agent is never identified in those who suffer from chronic hives.
Hives can be triggered by many things, including:
1.Medications, especially aspirin, ibuprofen, naproxen, narcotic painkillers, and antibiotics Infections with viruses, bacteria, or fungi
2.Environmental allergies such as insect bites, pollen, mold, and animal dander
3.Physical exposures such as heat, cold, water, sunlight, and pressure
4.Medical conditions including some blood diseases and cancer
5.Food allergies such as from strawberries, eggs, nuts, and shellfish
Stress
In many cases, the causative agent is not identified despite extensive testing. This is referred to as idiopathic urticaria. In approximately 50% of idiopathic urticaria outbreaks, hives are most likely caused by a reaction from the person's own immune system (autoimmune reaction).

Shingles (Zoster):
Shingles, also known as herpes zoster, is a painful rash caused by the varicella-zoster virus, the same virus that causes chickenpox. After a person recovers from chickenpox, the virus remains sleeping (dormant) in certain nerves in the body. As we get older, our immune system becomes weaker and may not be strong enough to control the virus. Shingles occurs if the virus becomes active again, growing down the nerves to reach the skin and appearing as small, painful blisters.