12 results
Petechial/Purpuric Rashes- THE ALGORITHMIC APPROACH 

These rashes can be especially challenging and are
associated with devastating differential
with fever or toxicity ... with fever/toxicity ... rash, the diagnosis ... #Diagnosis #Dermatology ... #Purpuric #Rash
Petechiae/Purpura - Diagnostic Algorithm. Pathophysiology: 1) Represent the passage of erythrocytes from the intravascular to extravascular
Petechiae/Purpura ... - Diagnostic Algorithm ... commonly renal and pulmonary ... #Diagnosis # ... Dermatology #Rash
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
Diagnosis Framework ... Kasabach-Merritt syndrome ... Gardner-Diamond syndrome ... mountain spotted fever ... #dermatology
Causes of Petechial Rash - Differential Diagnosis Algorithm

Pinpoint areas (less than 2 mm) of hemorrhage, which
- Differential Diagnosis ... Red Flags: • Fever ... Henoch Schonlein Purpura ... Rash: - Purpura ... Algorithm #Causes #dermatology
Skin Conditions Associated with Joint Pain

Rash
	• Human parvovirus B19 infection

Malar rash
	• SLE
	• Human parvovirus B19 infection
	•
• Rheumatic fever ... Crohn's disease Palpable ... Antiphospholipid-antibody syndrome ... Sarcoidosis #dermatology ... #differential #diagnosis
Dermatologic Manifestations of Granulomatosis with Polyangiitis (GPA)

Skin involvement in granulomatosis with polyangiitis (GPA) is common and
• Petechiae, Palpable ... Maculopapular rash ... • Petechiae • Palpable ... • Goodpasture syndrome ... #rash #diagnosis
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
- Differential Diagnosis ... Vasculitis Differential Diagnosis ... Vasculitis: • Fevers ... and branches • Fever ... , mucositis • Rash
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
Coronary arteries - Fever ... mucositis - Rash ... Vasculitis: • Fevers ... scleritis • Palpable ... Skin -> causing palpable
Macrophage Activation Syndrome (MAS)
Classified among the secondary or acquired forms of haemophagocytic lymphohistiocytosis (sHLH)

What?
A subset of
easy bruising to purpura ... (Petechial or purpuric ... rash) • Heart, ... #Diagnosis #Management ... #Hematology #Rheumatology
Rickettsialpox Eschar

40 homeless male from NY admitted with fever, chills, headache, myalgias. Diagnosis?
Rickettsialpox R akari classic
admitted with fever ... Diagnosis? ... Palpable draining ... rakari #clinical #photo ... #skinrash #dermatology