B14. Types of allergic skin reactions
Appearance
- Type I hypersensitivity
- Skin reactions
- Angioedema
- Urticaria
- Diagnosis – prick test
- Treatment
- Antihistamines
- Epinephrine
- Skin reactions
- Type II hypersensitivity
- Not important
- Type III hypersensitivity – immune complex-mediated
- Cutaneous vasculitis
- Serum sickness
- Treatment
- Steroids
- Type IV hypersensitivity
- Type IVa – Allergic contact dermatitis
- Type IVb – Drug-related eosinophilia and systemic symptoms (DRESS)
- Type IVc – Toxic epidermal necrolysis/Stevens-Johnson syndrome
- Type IVd – Acute generalized exanthematous pustulosis (AGEP)
- Diagnosis – patch test
- Treatment
- Steroids