16 results
Morphology of Skin Lesions - Primary and Secondary - Description Algorithm
 • Primary Skin Lesion -
Morphology of Skin ... not altered by trauma ... • Secondary Skin ... develops from trauma ... #Algorithm #dermatology
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
Purpura - Differential ... purple, hemorrhagic skin ... /Quantity: • Primary ... - Trauma • ... #nonpalpable #dermatology
Petechiae/Purpura - Diagnostic Algorithm. Pathophysiology: 1) Represent the passage of erythrocytes from the intravascular to extravascular
vascular integrity (trauma ... or disorders of primary ... or secondary hemostasis ... #Diagnosis #Dermatology ... Palpable #Algorithm #Differential
Christmas Tree Rash of Pityriasis rosea
 - small oval scaling patches
 - Christmas tree pattern
 -
parallel to lines of skin ... palms/soles - Differential ... diagnosis: secondary ... rosea #clinical #dermatology ... #photo #PhysicalExam
Pruritus - Generalized Differential Diagnosis Algorithm - Systemic and Primary Causes
== Primary Skin Lesions ==
Macules /
- Generalized Differential ... Skin Lesions == ... • Xerosis (dry skin ... #secondary #systemic ... #generalized #dermatology
Vasculitis Involving the Skin - Differential Diagnosis Framework

Primary: 50% Cutaneous Vasculitis: Leukocytoclastic Vasculitis
Secondary: CTD: SLE, RA
- Differential ... Diagnosis Framework Primary ... Leukocytoclastic Vasculitis Secondary ... Petechiae, Palpable purpura ... #dermatology #rheumatology
Causes of Petechial Rash - Differential Diagnosis Algorithm

Pinpoint areas (less than 2 mm) of hemorrhage, which
Abnormalities in primary ... or secondary hemostasis ... integrity: - Trauma ... cryoglobulins • Skin ... #physicalexam
Primary Dermatological Lesions
Primary lesions are physical changes in the skin considered to be caused directly by
associated with secondary ... PETECHIAE and PURPURA ... Purpura are larger ... #Diagnosis #Dermatology ... #Skin #Primary
Diagnostic Framework for Hemolysis - Intravascular vs Extravascular Causes
Intravascular Hemolysis:
 • Mechanical Trauma (Microangiopathic hemolytic anemia):
• Mechanical Trauma ... thrombocytopenic purpura ... usually IgM) (e.g. primary ... Extravascular #Causes #differential ... #diagnosis #hematology
Palpable Purpura seen in Henoch Schonlein Purpura (HSP, IgA Vasculitis)

55 year old male on tuberculosis treatment
Palpable Purpura ... Henoch Schonlein Purpura ... Vasculitis #clinical #photo ... #dermatology #skin ... #rash #physicalexam