9 results
Causes of Petechial Rash - Differential Diagnosis Algorithm

Pinpoint areas (less than 2 mm) of hemorrhage, which
Rash - Differential ... - Collagen disorders ... Red Flags: • Fever ... cryoglobulins • Skin ... #dermatology #physicalexam
SKIN RASHES 



Skin rashes can occur from a variety of factors, including infections, heat, allergens, immune
SKIN RASHES ... immune system disorders ... the presence of fever ... and systemic signs ... petechiae; #purpura; #rash
Sweet Syndrome

Acute febrile neutrophilic dermatosis (Sweets Syndrome) is a skin condition characterized by fever and inflamed
Rare Disorder: ... onset of a rash ... Episcleritis Signs ... Causes: - Idiopathic ... Leukocytoclastic vasculitis
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
tract, and often causes ... mucositis - Rash ... arterial aneurysms can ... : • Fevers • ... purpura: strong sign
Erythemas Summarized
Erythema ab igne
 • A dermatosis that results from repeated exposure to heat (fires, heating
centrifugum • A chronic skin ... • Can be induced ... of necrotizing vasculitis ... • Can be associated ... comparison #table #differential
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
Vasculitis - Differential ... purpura: Strong sign ... , mucositis • Rash ... tract, and often causes ... arterial aneurysms can
SLE (Systemic Lupus Erythematosus)

Suspect:
Clinical evidence of (fatigue, rash, photosensitivity, inflammatory arthritis, weight loss, and fever) and
weight loss, and fever ... 3rd Decade Skin ... permanent alopecia Differential ... Seizures • Strokes Skin ... to: Arthritis, Fever
PALM RASHES 
Common features and patterns:
1.	Color:
o	Red or erythematous: Common in inflammatory or allergic reactions.
o	Purple or purpuric:
inflammation (vasculitis ... depigmentation disorders ... occur in chronic skin ... Seen in systemic causes ... (e.g., scarlet fever
Autoimmune Myositis - Differential Diagnosis Framework

Inflammatory Myopathies: Commonly symmetric proximal muscle weakness, no substantial muscle pain
Autoimmune Myositis - Differential ... ) • Anti-Mi2 (skin ... Symptoms: • Gottron rash ... ) • Shawl sign ... statins - probably caused