11 results
Summary table of types of hypersensitivity reactions. 
Type 1
 - Mediators: lgE
 - Antigen Form: Soluble
of hypersensitivity ... Allergen-specific lgE causes ... Antigen-antibody complex ... Antigen-antibody complexes ... allergy #table #classification
Genital Skin Ulcers - Differential Diagnosis Algorithm
Painful:
 • Herpes simplex
 • Haemophilus ducreyi (chancroid)
 • Behcet's
Genital Skin Ulcers ... Differential Diagnosis Algorithm ... Painful: • Herpes simplex ... ulcerative #skinrash #dermatology ... #causes
Oral Skin Ulcers - Differential Diagnosis Algorithm
Single Ulcer:
 • Traumatic ulcer
 • Angular ulcer
 • Aphthous
Differential Diagnosis Algorithm ... • Herpes simplex ... mouth #SkinRash #dermatology ... Differential #Diagnosis #Algorithm ... #causes
Skin Ulcers by Etiology - Differential Diagnosis Algorithm
Physical:
 • Trauma
 • Pressure
 • Radiation
Vascular:
 • Arterial
Skin Ulcers by Etiology ... Differential Diagnosis Algorithm ... • Bleomycin Hematologic ... Viral - Herpes simplex ... #causes
Cryoglobulinemia Summary

Cryoglobulins:
 • Cryoglobulins are Igs in the serum that precipitate in vitro at temperatures below
deposit of immune complexes ... • They can cause ... Purpura - Skin ulcers ... vasculitis • Hypersensitivity ... #classification
Genital Lesions - Differential Diagnosis Algorithm
Elevated - Vesicles:
 • Herpes simplex
Elevated - Papules / Plaques -
Differential Diagnosis Algorithm ... Depressed - Erosions/Ulcers ... Depressed - Erosions/Ulcers ... #skinlesions #dermatology ... #causes
Hypersensitivity: Definitions
 • Type I - Production of lgE Abs that bind to harmless allergens and
Hypersensitivity ... cell surfaces causes ... antigen-surface complex ... #Hypersensitivity ... #Classification
Cryofibrinogenemia Summary

Cryofibrinogenemia Epidemiology:
 • 40-70 years with a modest female predominance

Cryofibrinogenemia:
 • The precipitation of a
precipitating complex ... Divided Into Two Types ... sensitivity • Painful ulcers ... cryoglobulins • Negative causes ... #hematology
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
tracts Immune Complex ... tract, and often causes ... livedo reticularis, ulcers ... genital aphthous ulcers ... #classification
Nontuberculous Mycobacteria (NTM) Infections 

Mycobacterial species other than those belonging to the Mycobacterium tuberculosis complex and
Mycobacterium tuberculosis complex ... status NTM Cause ... (buruli ulcer) ... Avium Complex (MAC ... Hematologic malignancy