23 results
#tachenoir #eschar #fever #Rash #rickettsia #rickettsial #parkeri #akari #africae #conorii #orientia #tsutsugamushi #tick #mite 
By Dr.
tachenoir #eschar #fever ... #Rash #rickettsia ... #InfectiousDiseases ... #Infections #Microbiology ... Differential #Ddx #Diagnosis
Maculopapular - Diagnostic Algorithm
Pathophysiology:
- Catch-all term with a wide range of potential pathophysiologic mechanisms and causative
Maculopapular - Diagnostic ... instability - New-onset fever ... with rash - Mucocutaneous ... sulfa-drug - Skin ... #Dermatology #Rash
Erythemas Summarized
Erythema ab igne
 • A dermatosis that results from repeated exposure to heat (fires, heating
centrifugum • A chronic skin ... or Haverhill fever ... gyratum repens • A skin ... induratum • A chronic skin ... #differential #diagnosis
Skin Conditions Associated with Joint Pain

Rash
	• Human parvovirus B19 infection

Malar rash
	• SLE
	• Human parvovirus B19 infection
	•
Joint Pain Rash ... Malar rash ... • Rheumatic fever ... gangrenosum • IBD ... #differential #diagnosis
Adult-Onset Still's Disease (AOSD)
Rare inflammatory disorder of unknown etiology, difficult to diagnose because of heterogenous presentation.
likely conditions (autoimmune ... , infectious, malignant ... susceptibility, infectious ... : High spiking fever ... maculopapular rash
Causes of Petechial Rash - Differential Diagnosis Algorithm

Pinpoint areas (less than 2 mm) of hemorrhage, which
- Differential Diagnosis ... - Trauma - Infection ... Red Flags: • Fever ... : - Autoimmune ... cryoglobulins • Skin
Moccasin-variety Tinea Pedis 
70 M chronic scaly feet. Over the years: rash has itched only occasionally;
Over the years: rash ... Diagnosis? ... skin of inflamed ... Indiana University Infectious ... type #clinical #photo
Tinea Capitis in a Newborn- A 3-week-old male newborn was brought to the pediatrician with three
Newborn- A 3-week-old ... Somalia, had similar skin ... fungal infection ... ringworm, was diagnosed ... #clinical #photo
Hemophagocytic Lymphohistiocytosis (HLH)
Pathophysiology: Triggering factor (infection,...)→Activation of CD8 T cells (IFN-y) → Excessive activation of macrophages
Lymphohistiocytosis (HLH) Pathophysiology ... cytokines (TNFa,lL1, IL6 ... Auto-amplification loop Diagnosis ... • Clinical: fever ... solid cancers • Autoimmune
Sweet Syndrome

Acute febrile neutrophilic dermatosis (Sweets Syndrome) is a skin condition characterized by fever and inflamed
sudden onset of a rash ... - Rash: multiple ... general feeling of ill ... Upper respiratory infection ... gastrointestinal infection