6878 results
Cold Urticaria
Prevalence - 0.05% in the population
Disease onset - Mostly 2nd to 4th decades of life
Causes
Cold Urticaria Prevalence ... decades of life Causes ... fever, fatigue, Nausea ... Disorientation, vertigo Diagnostic ... #diagnosis #rheumatology
Causes of Urticaria

Immunoglobulin E (IgE) mediated

 - Aeroallergens

 - Contact allergen

 - Food allergens

 - Insect
Causes of Urticaria ... - Water #Diagnosis ... #Differential #Urticaria ... Mediated #NonIgE #Causes
Pruritus - Primary Skin Lesion - Differential Diagnosis Algorithm
Macules / Papules / Plaques:
 • Xerosis (dry
- Differential Diagnosis ... Wheals/Hives: • Urticaria ... #Differential #Diagnosis ... #Algorithm #causes
Reactive Skin Rash - Differential Diagnosis Algorithm
Reactive erythematous with various morphology
 • Urticaria - Firm /
- Differential Diagnosis ... morphology • Urticaria ... #Differential #Diagnosis ... #Algorithm #causes
Pruritus - Generalized Differential Diagnosis Algorithm - Systemic and Primary Causes
== Primary Skin Lesions ==
Macules /
Generalized Differential Diagnosis ... Systemic and Primary Causes ... Wheals/Hives: • Urticaria ... #Differential #Diagnosis ... #Algorithm #causes
Dematoses in Pregnancy - Specific Skin Conditions
Non-Pruritic
 • Pustular psoriasis of pregnancy
 • Impetigo Herpetiformis
Pruritic -
gestationis • Pruritic urticarial ... #Differential #Diagnosis ... #Algorithm #causes
Approach to Elevated Tryptase - Differential Diagnosis Framework

The DDx of elevated tryptase can be broken down
- Differential Diagnosis ... Dangerous secondary causes ... infections • Chronic Urticaria ... pass = Primary Causes ... #Differential #Diagnosis
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
- Differential Diagnosis ... tract, and often causes ... Vasculitis): - Urticaria ... Differential Diagnosis ... #differential #diagnosis
Uncommon Causes of Noncardiogenic Pulmonary Edema (NCPE) - Differential Diagnosis Framework

High Altitude Pulmonary Edema:
 • Accumulation
Uncommon Causes ... - Differential Diagnosis ... chills, pruritus, urticaria ... Any opioid can cause ... #differential #diagnosis
Dermatologic Manifestations of Granulomatosis with Polyangiitis (GPA)

Skin involvement in granulomatosis with polyangiitis (GPA) is common and
GPA causes disease ... gangrenosum) • Urticaria ... Differential Diagnosis ... dermatology #rash #diagnosis