Difference Between Hives and Rash

Key Differences – Hives vs Rash

Thekey differencebetween Hives and rash is thatRashis a general term used to describe a form of skin disease与不同的外观相关，皮肤损伤导致皮肤的质地due to multiple causessuch as infections, immune-mediated diseases etc. whileHivesor urticariaare specific forms of skin manifestationswith a characteristic appearance which arecommonly caused by allergy.

什么是蜂箱？

Hives are slightly elevated, reddish, itchy, multiplelesionsoccurring on the skin. These occur commonly as a result of an allergy. With过敏原exposure, it causes mast cells to release histamine which is a chemical mediator stored inside mast cells. Histamine causes dermal edema giving rise to this typical appearance. Hives occur very rapidly, and it commonly occurs with食物过敏。However, some other causes such as pressure and sunlight can cause hives rarely in a certain vulnerable group of people. Hives disappear spontaneously, and they areself-limiting。如果蜂箱与威胁生命的过敏反应有关，例如血管性水肿（血管性水肿）（水肿around the mouth) oranaphylaxis,需要更多的医疗照顾d. Antihistamines can be used for symptomatic relief. Sometimes, a short cause of类固醇可能需要缓解症状。重要的是要避免暴露于已知的过敏原/原因以防止荨麻疹复发。

What are Rashes?

皮疹are a category of skin disease causing skin damage. Rashes can take many appearances such as macular, popular, maculopapular, exfoliative, plaque forming, etc. Some rashes are inherent diseases affecting the skin such asEczema and Psoriasis。Some rashes associated with other systemic diseases such as autoimmune diseases, infections, etc. Identification of the typical appearance and the distribution of rashes guide in the diagnosis of associated systemic diseases. Dermatology is the specialty in medicine with regard to the management of rashes. When the rash is severe, affecting deep layers of the skin, it can lead to dehydration,hypothermia和感染。皮疹需要医生的适当关注。有些皮疹短暂持久，完全可以治愈。这些例子是与感染相关的皮疹，例如病毒式疾病。另一方面，有些皮疹是复发的，没有完全治愈。例子是牛皮癣和湿疹。但是，可以通过提供适当的治疗来令人满意地控制这些皮疹。皮疹的治疗包括局部应用，例如乳液，面霜和软膏以及口服治疗。

What is the difference between Hives and Rash?

Cause

Hives:Hives are caused by allergy in most of the times.

皮疹:皮疹are caused by many causes including infections, autoimmune disease, etc.

Appearance

Hives:Hives are reddish, itchy, round or irregular, multiple lesion occurring rapidly all over the body.

皮疹:皮疹can take many appearances such as macular (flat), popular (elevated), etc.

Associations

Hives:Hives can be associated with other manifestations of allergy such as angioedema, wheezing, anaphylaxis.

皮疹:皮疹can have many associations such as infections and autoimmune diseases.

治疗

Hives:Hives can be treated with antihistamines and steroids.

皮疹:皮疹can be treated with many different local applications as well as with oral treatment depending on the cause.

Prognosis

Hives:Hives can occur as a single episode or recurrent depending on the underlying cause, and they have a good prognosis in most of the times.

皮疹:皮疹are caused by a variety of causes. Therefore, the prognosis will depend on the exact cause.

Image courtesy:

“EMminor2010” by James Heilman, MD – Own work.(CC BY-SA 3.0) viaCommons

“Severerash” by Rashy100 at English Wikipedia – Transferred from en.wikipedia to Commons.(Public Domain) viaCommons