contact dermatitis

Examples of contact dermatitis in the following topics:

• Rash

  • Contact dermatitis is a localized rash or irritation of the skin caused by contact with a foreign substance.
  • Only the superficial regions of the skin are affected in contact dermatitis.
  • In the Americas, the most common causes of allergic contact dermatitis are plants of the Toxicodendron genus: poison ivy, poison oak, and poison sumac.

• Hypersensitivity

  • Associated disorders: Contact dermatitis, Mantoux test, Chronic transplant rejection, Multiple sclerosis, T-cells VAutoimmune disease receptor mediated, Graves' disease,Myasthenia Gravis.

• Blister

  • Sometimes, the skin will blister when it comes into contact with a cosmetic, detergent, solvent or other chemical.
  • This is known as contact dermatitis.
  • Some chemical warfare agents, known as blister agents or vesicants, cause large, painful blisters wherever they contact skin; an example is mustard gas.
  • Dermatitis herpetiformis – a skin disease that causes intensely itchy blisters, usually on the elbows, knees, back and buttocks.

• Edema

  • It can be caused by systemic diseases, pregnancy in some women, either directly or as a result of heart failure, or local conditions such as varicose veins, thrombophlebitis, insect bites, and dermatitis.
  • Examples of edema in specific organs include cerebral edema, pulmonary edema, periorbital edema (eye puffiness), and cutaneous edema due to mosquito bites, spider bites, bee stings, or contact dermatitis).

• Complete Antigens and Haptens

  • One well-known hapten is urushiol, the toxin found in poison ivy and a common cause of cell-mediated contact dermatitis.

• Hypersensitivities

  • It may manifest as local tissue lesions or contact dermatitis (rash or skin irritation).
  • Delayed hypersensitivity occurs in some individuals in response to contact with certain types of jewelry or cosmetics.

• Diagnosis and Treatment of Allergy

  • Patch testing is used to help ascertain the cause of skin contact allergy (contact dermatitis).

• Swimmer's Itch

  • Swimmer's itch is a condition often referred to as lake itch, duck itch, cercarial dermatitis and Schistosome cercarial dermatitis.
  • A species that is often implicated in cases of cercarial dermatitis is Austrobilharzia variglandis.
  • During the life stage of these parasites, the larvae of the parasite, cercaria, exit the water snails and can accidentally come into contact with the skin of a swimmer.
  • Upon contact with the skin of the swimmer, the cercaria will penetrate the skin and immediately die in the skin.
  • Outline the general life cycle of the Schistosomatidae parasite that causes schistosome cercarial dermatitis

• Antimicrobial Peptides

  • Decreased levels of these peptides have been noted for patients with atopic dermatitis and Kostmann's syndrome, a congenital neutropenia.

• Eye Contact

  • Eye contact is the meeting of the eyes between two individuals.
  • The study of eye contact is sometimes known as oculesics.
  • Eye contact can establish a sense of intimacy between two individuals, such as the gazes of lovers or the eye contact involved in flirting.
  • Alternatively, avoiding eye contact can establish distance between people.
  • When in crowds, people tend to avoid eye contact in order to maintain privacy.