Types of Urticaria

Acute Urticaria

Chronic Urticaria

Drug Induced Urticaria

Physical Urticaria

Urticaria describes a bark action that is characterized by the development of assorted types of acutely acquisitive and bloated red bumps or patches on the skin. These patches or hives may arise aback as a aftereffect of the body's adverse acknowledgment to assertive allergens. The bark on any allotment of the anatomy including the face, lips, tongue, throat or aerial is accessible to this condition. The hives that arise can alter in admeasurement and can aftermost for abandoned a few account or for several days.

There are several altered types of urticaria. Although the altered types are all related, they do aftermath capricious symptoms. Sometimes an abandoned may accept added than one type. Declared beneath are descriptions for acute, chronic, drug-induced, and concrete urticaria.

ACUTE

Acute urticaria usually becomes axiomatic a few account afterwards acquaintance with the allergen. The acknowledgment may aftermost from a few hours to several weeks, but usually beneath than six weeks. Typically, the hives are axiomatic abandoned for a few days. Reactions as a aftereffect of aliment allergens about account the astute anatomy of this bark problem, but for about bisected the cases the account is usually not found. Accepted foods that act as triggers are: carapace fish, nuts, eggs, fish, acerbic derivatives, and assertive aliment dyes. Added allergens can be antibiotics, bee or wasp stings or bark acquaintance with assertive fragrances.

This blazon of urticaria can action with anaphylaxis - a astringent allergic acknowledgment arch to adversity in animation and accessible death.

CHRONIC

Chronic urticaria is characterized by hives that arise circadian or about circadian for at atomic six weeks or more. Visually, both astute and abiding forms of the ache are the same. The botheration is that the abiding anatomy can abide for a connected time. Added astringent cases can aftermost up to 20 or added years. An identifiable account for the botheration is rarely found.

DRUG-INDUCED

Drugs that accept acquired allergic reactions manifesting as urticaria include: aspirin, penicillin, sulfonamides, anti-convulsants, and anti-diabetic drugs such as suphonylurea.

PHYSICAL

Dermatographism or Dermographism

Dermatographism is the actualization of wheals or welts on the bark as a aftereffect of rubbing, scratching, or abutting acclamation of the skin. It is the best accepted anatomy of concrete urticaria. The bark acknowledgment usually appears anon afterwards the abrading and disappears aural 30 minutes. For added admonition on dermatographism, charm acknowledgment to the dermatographism folio .

Pressure or Delayed Burden Urticaria

This blazon can action anon afterwards a burden bang or as a delayed acknowledgment to abiding burden actuality activated to the skin. In the delayed form, the hives abandoned arise afterwards about six hours from the antecedent appliance of burden to the skin. Generally, these hives are not the aforementioned as those activate with best urticarias. Instead, the abscess in the afflicted areas is about added diffuse. The hives may aftermost from about 8 hours to three days.

The antecedent of the burden on the bark can be from bound applicable clothing, belts, bra straps, walking, aptitude adjoin an object, standing, sitting on a adamantine surface, etc. The areas of the anatomy frequently afflicted are the hands, feet, the trunk, the buttocks, legs, and the face.

Although this appears to be absolute agnate to dermatographism, the capital aberration is that the aloft bark areas do not arise bound and tend to aftermost abounding longer. This anatomy of the ache is rare.

Cholinergic or Accent (Adrenergic) Urticaria

This anatomy is adequately accepted and occurs with exercise, sweating, or any action that leads to a abating of the amount anatomy temperature such as balmy or hot baths or showers. The hives that are produced are about abate than the archetypal hives. In astringent cases, hundreds of tiny red acquisitive spots arise on the bark with exercising, aback the abandoned is balmy or aback the abandoned is stressed. The red spots arise rather bound and abide for about 60 to 90 account on average.

Cold Urticaria

Cold urticaria is acquired by acknowledgment of the bark to algid temperatures. In particular, the hives arise on the bark areas that accept been apparent to cold, damp, and airy conditions.

Heat Urticaria

This attenuate anatomy is triggered by the appliance of calefaction on the skin. Hives advance aural 2 to 5 account on the breadth of the bark that was apparent to heat. The hives usually do not aftermost added than an hour.

Solar Urticaria

This is a attenuate anatomy of the ache and is acquired on areas of the bark that accept been apparent to the sun. The bark action becomes axiomatic aural account of the sun exposure. Afterwards the abandoned is no best apparent to the sun, the action starts to achromatize aural a few account to a few hours and rarely lasts best than 24 hours.

Water (Aquagenic) Urticaria

This blazon is absolute attenuate and occurs aloft acquaintance with water. The acknowledgment is not temperature abased and the bark appears agnate to cholinergic anatomy of the disease. The actualization of hives is aural 1 to 15 account of acquaintance with the baptize and can aftermost from 10 account to two hours.