Contact dermatitis
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Contact dermatitis
Immune system
Disorders associated with immunodeficiency
Asplenia
Common variable immunodeficiency
Hyperimmunoglobulin E syndrome
IgG subclass deficiency
Isolated primary immunoglobulin M deficiency
Selective immunoglobulin A deficiency
X-linked agammaglobulinemia
Adenosine deaminase deficiency
Ataxia-telangiectasia
Hyper IgM syndrome
Severe combined immunodeficiency
Wiskott-Aldrich syndrome
Complement deficiency
Hereditary angioedema
Chediak-Higashi syndrome
Chronic granulomatous disease
Leukocyte adhesion deficiency
DiGeorge syndrome
Thymic aplasia
HIV and AIDS
Immune system organ disorders
Immunologically mediated disorders
Cytomegalovirus infection after transplant (NORD)
Graft-versus-host disease
Post-transplant lymphoproliferative disorders (NORD)
Transplant rejection
Anaphylaxis
Asthma
Food allergy
Type I hypersensitivity
Autoimmune hemolytic anemia
Goodpasture syndrome
Graves disease
Hemolytic disease of the newborn
Immune thrombocytopenia
Myasthenia gravis
Pemphigus vulgaris
Rheumatic heart disease
Type II hypersensitivity
Poststreptococcal glomerulonephritis
Serum sickness
Systemic lupus erythematosus
Type III hypersensitivity
Contact dermatitis
Graft-versus-host disease
Type IV hypersensitivity
Infectious disorders
Immune system pathology review
Immunodeficiencies: Combined T-cell and B-cell disorders: Pathology review
Immunodeficiencies: Phagocyte and complement dysfunction: Pathology review
Immunodeficiencies: T-cell and B-cell disorders: Pathology review
HIV and AIDS: Pathology review
Blood transfusion reactions and transplant rejection: Pathology review
Key Takeaways
Contact dermatitis is a type of skin rash that occurs when your skin comes into contact with an allergen or irritant. It is considered a type IV (delayed) hypersensitivity reaction, and commonly associated allergens include perfumes, cosmetics, latex, detergents, and plants such as poison ivy. Common symptoms include skin redness, swelling, itching, blisters, and dry skin. In severe cases, contact dermatitis can lead to cracks in the skin that may become infected.