15 results
Causes of Petechial Rash - Differential Diagnosis Algorithm

Pinpoint areas (less than 2 mm) of hemorrhage, which
Causes of Petechial ... lesions called petechiae ... Petechiae Etiology ... Henoch Schonlein Purpura ... Rash: - Purpura
SKIN RASHES 



Skin rashes can occur from a variety of factors, including infections, heat, allergens, immune
be divided into petechial ... /purpuric, erythematous ... fever and systemic signs ... maculopapular; #petechiae ... ; #purpura; #rash
Petechiae are small, red lesions caused when capillaries leak blood into the skin. Petechiae larger than
Petechiae are small ... Petechiae larger ... than 0.5 cm are purpura ... IM #Derm #Petechiae ... #Purpura
Dermatologic Manifestations of Granulomatosis with Polyangiitis (GPA)

Skin involvement in granulomatosis with polyangiitis (GPA) is common and
Skin Findings: • Petechiae ... , Palpable purpura ... sensation or pain: • Petechiae ... • Palpable purpura ... Henoch-Schönlein purpura
Bleeding manifestations 
Petechiae are small, flat, red, discrete areas of skin bleeding that are typically <2
manifestations Petechiae ... areas of the body Purpura ... from coalesced petechiae ... Wet purpura is the ... 1 and 2) #Petechiae
Vasculitis Involving the Skin - Differential Diagnosis Framework

Primary: 50% Cutaneous Vasculitis: Leukocytoclastic Vasculitis
Secondary: CTD: SLE, RA
Small Vessel: Petechiae ... , Palpable purpura ... Vasculitis: - Ig A (HSP
Scurvy (Vitamin C Deficiency) - Diagnosis and Management

Vitamin C is required for hydroxylation of proline residues
cramping Skin: • Petechia ... • Purpura • Perifollicular ... • Petechiae, purpura ... , or any other cause ... Henoch-Schonlein purpura
Disseminated Intravascular Coagulation (DIC) Overview

Increased Clotting and Consumption of Clotting Factors

Findings:
 • Bleeding
 • Recent history
organ damage Clinical ... Manifestations of DIC: • Petechiae ... • Purpura • ... Palpable variants ... Hemorrhagic bullae • Purpura
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
Vasculitis: • Purpura ... purpura: Strong ... purpura • Pauci ... purpura, joint ... purpura (lower
Polyarteritis Nodosa (PAN): Pathogenesis and Clinical Findings

Medical Comorbidities Malignancies (most commonly hairy-cell leukemia)
Immunogenetic Predisposition: patient is
Pathogenesis and Clinical ... Viral replication causes ... endothelial cells - Palpable ... or necrotic purpura ... Pathophysiology #Diagnosis #Signs