18 results
Approach to Joint Pain

History:
Is the pain from:
	• Joint
	• Adjacent bursa
	• Tendon
	• Ligament
	• Bone
	• Muscle
	• Referred from
present both at rest ... improves quickly with rest ... : • Acute or chronic ... trauma (e.g., meniscal ... approach #workup #differential
Causes of Diffuse Lymphadenopathy - Differential Diagnosis Algorithm
Reactive:
 - Systemic Inflammatory
     •
Lymphadenopathy - Differential ... • Rheumatoid Arthritis ... Pancytopenia, WBC differential ... Age > 50 • Chronic ... Algorithm #Causes #Hematology
Skin Conditions Associated with Joint Pain

Rash
	• Human parvovirus B19 infection

Malar rash
	• SLE
	• Human parvovirus B19 infection
	•
Dermatomyositis Erythema chronicum ... • Gonococcal arthritis ... • Psoriatic arthritis ... Sarcoidosis #dermatology ... #skin #rashes #differential
Behçet's Syndrome
Systemic disease associated with inflammation of multiple organs, small-vessel vasculitis and large-vessel vasculopathy
Epidemiology:
 • Young
pathognomonic laboratory tests ... Positive pathergy test ... is a skin prick test ... Behcet disease) Differential ... Recurrent and chronic
Pruritus - Generalized Differential Diagnosis Algorithm - Systemic and Primary Causes
== Primary Skin Lesions ==
Macules /
- Generalized Differential ... Liver Function Tests ... Creatinine & BUN: • Chronic ... #generalized #dermatology ... #Differential #
Causes of Isolated Neutropenia - Differential Diagnosis Algorithm
Congenital
Medications
 • Anticonvulsants
 • Antibiotics
 • Antithyroid
 • Antihypertensive
Neutropenia - Differential ... Idiopathic - Chronic ... • Rheumatoid Arthritis ... #Neutropenia #Differential ... Algorithm #Causes #Hematology
Causes of Polycythemia (Erythrocytosis) - Differential Diagnosis Algorithm
Relative - Normal RBC Mass / Decreased Plasma Volume
Erythrocytosis) - Differential ... Abnormal Abdominal Ultrasound ... Smoking, Snoring Chronic ... Sleep Apnea • Chronic ... Algorithm #Causes #Hematology
Chronic Diarrhea - Workup
Osmotic:
 • Consider food diary and trial avoiding certain foods or meds, Consider
Chronic Diarrhea ... hydrogen breath test ... Abdominal imaging (CT, ultrasound ... EricsMedicalLectures/ #Chronic ... Workup #diagnosis #differential
Causes of Petechial Rash - Differential Diagnosis Algorithm

Pinpoint areas (less than 2 mm) of hemorrhage, which
Petechial Rash - Differential ... Fecal occult blood test ... • Abdominal ultrasound ... Petechiae #Rash #Differential ... Algorithm #Causes #dermatology
Allopecia - Differential Diagnosis Framework for Hair Loss

Localized / Focal Hair Loss Pattern:
 • Scarring Alopecia:
Allopecia - Differential ... disease • Pull test ... Initial Laboratory Tests ... weight loss • Chronic ... #Diagnosis #dermatology