49 results
Skin Conditions Associated with Joint Pain

Rash
	• Human parvovirus B19 infection

Malar rash
	• SLE
	• Human parvovirus B19 infection
	•
Associated with Joint Pain ... Rash • Human ... • Rheumatic fever ... gangrenosum • IBD ... differential #diagnosis
Secondary Syphilis Rash
Secondary syphilis is the most contagious of all the stages of this disease, and
Rash Secondary ... Skin rash and malaise ... ) ▪ Malaise, fever ... #Rash #Diagnosis ... #Clinical #Photo
Acute Purpura Fulminans Skin Rash on Physical Exam 
60 year old male ITP s/p splenectomy 
1d
Purpura Fulminans Skin ... Exam 60 year old ... purpura fulminans secondary ... BIDMC Infectious Diseases ... #photo
Cold Urticaria
Prevalence - 0.05% in the population
Disease onset - Mostly 2nd to 4th decades of life
Causes
decades of life Causes ... symptoms - Headache, fever ... , abdominal pain ... Cold #Urticaria #diagnosis ... #rheumatology #comparison
Leg Pain - Differential Diagnosis Framework

Bone/Joint Causes of Leg Pain:
 • Fracture
 • Arthritis
 • Gout/pseudogout
Diagnosis Framework ... Legg-Calve-Perthes disease ... • Bursitis • IBD ... Causes of Leg Pain ... /swelling - Fever
Causes of Petechial Rash - Differential Diagnosis Algorithm

Pinpoint areas (less than 2 mm) of hemorrhage, which
Causes of Petechial ... in primary or secondary ... Red Flags: • Fever ... lesions • Severe pain ... cryoglobulins • Skin
Erythemas Summarized
Erythema ab igne
 • A dermatosis that results from repeated exposure to heat (fires, heating
centrifugum • A chronic skin ... early localized disease ... gyratum repens • A skin ... PrathitKulkarni #Erythemas #comparison ... #differential #diagnosis
Chronic Abdominal Pain Causes - Differential Diagnosis Framework

Many patients with chronic abdominal pain have had prior
Diagnosis Framework ... did not yield a diagnosis ... Red Flags: • Fever ... • Skin changes ... #Differential #Diagnosis
Adult Onset Still's Disease
Systemic inflammation with urticarial rash.
Rash: 
 • Nonpruritic, evanescent (correlates with time of
Onset Still's Disease ... with urticarial rash ... Rash: • Nonpruritic ... maculopapular skin ... #rheumatology #management
Moccasin-variety Tinea Pedis 
70 M chronic scaly feet. Over the years: rash has itched only occasionally;
Over the years: rash ... Diagnosis? ... dermatophytes cause ... skin of inflamed ... type #clinical #photo