8 results
Maculopapular - Diagnostic Algorithm
Pathophysiology:
- Catch-all term with a wide range of potential pathophysiologic mechanisms and causative
or fluid-filled lesions ... Ill-appearing, vital ... instability - New-onset fever ... or ocular lesions ... Targetoid #Algorithm #Differential
Causes of Petechial Rash - Differential Diagnosis Algorithm

Pinpoint areas (less than 2 mm) of hemorrhage, which
- Differential ... reddish-purple lesions ... Red Flags: • Fever ... Schonlein Purpura - Endocarditis ... Algorithm #Causes #dermatology
Endocarditis Summary

Who?
Infectious:
• Pre-existing valvular disease
• Prosthetic valve
• Congenital heart disease
• IV substance use
• IV catheter
• Recent
Involves aortic and mitral ... night sweats, fever ... Marantic (NTBE) Differential ... Paradoxical emboli via ASD ... Persistent bacteremia/fevers
Petechial/Purpuric Rashes- THE ALGORITHMIC APPROACH 

These rashes can be especially challenging and are
associated with devastating differential
petechiae/purpura with fever ... gonococcal disease, endocarditis ... petechial or purpuric rash ... #Diagnosis #Dermatology ... Purpural #Purpuric #Rash
Endocarditis - Overview and Differential Diagnosis Framework

Who?
Infectious:
• Pre-existing valvular disease
• Prosthetic valve
• Congenital heart disease
• IV
and Differential ... involves aortic and mitral ... night sweats, fever ... Persistent bacteremia/fevers ... #Endocarditis #Differential
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
Purpura - Differential ... hemorrhagic skin lesions ... CTD (SLE) - Viral ... mountain spotted fever ... • Bacterial endocarditis
Pustular Skin Lesions - Differential Diagnosis Framework

What are pustules?
• Pustules < 5-10 mm + pus
• Material
Pustular Skin Lesions ... - Differential ... Generalized itchy rash ... Pustules + Fever ... Diagnosis #Dermatology
SLE (Systemic Lupus Erythematosus)

Suspect:
Clinical evidence of (fatigue, rash, photosensitivity, inflammatory arthritis, weight loss, and fever) and
weight loss, and fever ... papulosquamous lesions ... permanent alopecia Differential ... • Libman-Sacks endocarditis ... Cytopenias • Cardiac valve