17 results
Christmas Tree Rash of Pityriasis rosea
 - small oval scaling patches
 - Christmas tree pattern
 -
parallel to lines of skin ... palms/soles - Differential ... diagnosis: secondary ... nummular eczema, tinea ... #dermatology #photo
Maculopapular - Diagnostic Algorithm
Pathophysiology:
- Catch-all term with a wide range of potential pathophysiologic mechanisms and causative
Maculopapular - Diagnostic ... instability - New-onset fever ... sulfa-drug - Skin ... #Dermatology #Rash ... Targetoid #Algorithm #Differential
Skin Conditions Associated with Joint Pain

Rash
	• Human parvovirus B19 infection

Malar rash
	• SLE
	• Human parvovirus B19 infection
	•
Joint Pain Rash ... • Rheumatic fever ... gangrenosum • IBD ... #rashes #differential ... #diagnosis #rheumatology
Heat Illnesses and Heat Stroke - Differential Diagnosis Framework

Heat Cramps:
 • Muscle pain or spasm -
Heat Stroke - Differential ... Diagnosis Framework ... Rash: • Small ... blisters on the skin ... Collapse: • Pathophysiology
Adult Onset Still's Disease
Systemic inflammation with urticarial rash.
Rash: 
 • Nonpruritic, evanescent (correlates with time of
with urticarial rash ... Rash: • Nonpruritic ... • Leukocytosis Diagnosis ... maculopapular skin ... #rheumatology #management
Fever vs Hyperthermia
Fever:
 • Regulated in the hypothalamic thermoregulatory center
 • "Set point" raised by prostaglandin
Fever vs Hyperthermia ... Fever: • Regulated ... loss from the skin ... Hyperthermia #comparison #diagnosis ... #management #treatment
Drug Reaction with Eosinophilia and Systemic Symptoms (DRESS)
Definition: 
 • Severe adverse drug reaction, characterized by
rash in association ... Fever >38.5 2. ... Resolution > 15 days Differentials ... withdrawal • Mild ... #management
Adult-Onset Still's Disease
Clinical triad: Fever, Arthralgia/arthritis, Skin rash ± odynophagia
+ Biological inflammation: Increased neutrophils, Hyperferritinemia, decreased
Clinical triad: Fever ... Arthralgia/arthritis, Skin ... rash ± odynophagia ... fraction < 20% Differential ... #management #treatment
Erythemas Summarized
Erythema ab igne
 • A dermatosis that results from repeated exposure to heat (fires, heating
repeated exposure to heat ... centrifugum • A chronic skin ... gyratum repens • A skin ... comparison #table #differential ... #diagnosis #dermatology
Hyperthyroidism Overview

Clinical Manifestation of Hyperthyroidism:
 • Fatigue
 • Weight loss
 • Heat intolerance
 • Depression, nervousness
Weight loss • Heat ... hyperthyroidism Diagnosis ... arrhythmia - Fever ... Thickening of skin ... #differential #