12 results
Petechial/Purpuric Rashes- THE ALGORITHMIC APPROACH 

These rashes can be especially challenging and are
associated with devastating differential
Petechial/Purpuric ... gonococcal disease, endocarditis ... petechiae are ... #Diagnosis #Dermatology ... #Petechial #Petechiae
Causes of Petechial Rash - Differential Diagnosis Algorithm

Pinpoint areas (less than 2 mm) of hemorrhage, which
Causes of Petechial ... lesions called petechiae ... Petechiae Etiology ... ultrasound #Petechial ... #Petechiae #Rash
Conjunctival Petechiae: Conjunctival petechiae, in this case secondary to endocarditis.
Photo credit, Josh Fierer, M.D.

Charlie Goldberg, M.D.
Conjunctival Petechiae ... : Conjunctival petechiae ... , in this case secondary ... to endocarditis ... #Conjunctival #Petechiae
Vascular Skin Lesions - Differential Diagnosis Algorithm
 - Petechiae < 0.2 cm diameter
 - Purpura 0.2
Skin Lesions - Differential ... Algorithm - Petechiae ... Vasculitis #SkinRash #dermatology ... #Differential # ... Diagnosis #Algorithm #causes
Bleeding manifestations 
Petechiae are small, flat, red, discrete areas of skin bleeding that are typically <2
manifestations Petechiae ... non-blanching, nonpalpable ... from coalesced petechiae ... ecchymosis) is caused ... 1 and 2) #Petechiae
Causes of Thrombocytopenia and Platelet Disorders - Differential Diagnosis and Workup
History:
 - Prior platelet count, family
Causes of Thrombocytopenia ... Platelet Disorders - Differential ... History of bleeding (petechiae ... Platelet #Disorders #Differential ... #Workup #hematology
Dermatologic Manifestations of Granulomatosis with Polyangiitis (GPA)

Skin involvement in granulomatosis with polyangiitis (GPA) is common and
Dermatologic Manifestations ... GPA causes disease ... Skin Findings: • Petechiae ... sensation or pain: • Petechiae ... reticularis Differential
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
Purpura - Differential ... • Bacterial endocarditis ... Vasculopathy #Purpura #Differential ... rheumatology #palpable #nonpalpable ... #dermatology
Pigmented Purpuric Dermatoses (PPD) - Capillaritis

Group of chronic, benign, cutaneous eruptions characterized by the presence of
the presence of petechiae ... characterized by petechiae ... - This iron causes ... Dermatoses #Dermatosis #differential ... #diagnosis #dermatology
Endocarditis Summary

Who?
Infectious:
• Pre-existing valvular disease
• Prosthetic valve
• Congenital heart disease
• IV substance use
• IV catheter
• Recent
positive in 90% of IE cases ... hemorrhages • Petechiae ... Septic Emboli Cause ... Marantic (NTBE) Differential ... Treat underlying cause