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Symptoms and Signs – Differential Diagnosis of Miosis
• Neurosyphilis
• Medications (e.g., morphine, pilocarpine)
• Iritis
• Inflammation/irritation of cornea or conjunctiva
• Congenital
• CNS pontine lesion
• CNS infections
• Cavernous sinus thrombosis
• Neurosyphilis
• Medications (e.g., morphine, pilocarpine)
• Iritis
• Inflammation/irritation of cornea or conjunctiva
• Congenital
• CNS pontine lesion
• CNS infections
• Cavernous sinus thrombosis
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Symptoms and Signs – Differential Diagnosis of Mitral Regurgitation
• Ventricular septal defect (VSD)
• Tricuspid regurgitation
• Pulmonary regurgitation
• Hypertrophic cardiomyopathy
• Ventricular septal defect (VSD)
• Tricuspid regurgitation
• Pulmonary regurgitation
• Hypertrophic cardiomyopathy
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Symptoms and Signs – Differential Diagnosis of Mitral Stenosis
• Atrial septal defect
• Left atrial myxoma
• Other valvular abnormalities (e.g., tricuspid stenosis, mitral regurgitation)
• Atrial septal defect
• Left atrial myxoma
• Other valvular abnormalities (e.g., tricuspid stenosis, mitral regurgitation)
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Symptoms and Signs – Differential Diagnosis of Mitral Valve Prolapse
• Constrictive pericarditis
• Other valvular abnormalities
• Ventricular aneurysm
• Constrictive pericarditis
• Other valvular abnormalities
• Ventricular aneurysm
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Symptoms and Signs – Differential Diagnosis of Molluscum Contagiosum
• Basal cell carcinoma: multiple lesions are absent
• Cutaneous cryptococcosis in AIDS patients: budding yeasts will be present on cytologic examination of the lesions
• Folliculitis: no central umbilication, presence of hair piercing the pustule or papule
• Herpes simplex: lesions become rapidly umbilicated
• Varicella: blisters and vesicles are present
• Verruca plana (flat warts): no central umbilication, not dome shaped, irregular surface, can involve palms and soles
• Basal cell carcinoma: multiple lesions are absent
• Cutaneous cryptococcosis in AIDS patients: budding yeasts will be present on cytologic examination of the lesions
• Folliculitis: no central umbilication, presence of hair piercing the pustule or papule
• Herpes simplex: lesions become rapidly umbilicated
• Varicella: blisters and vesicles are present
• Verruca plana (flat warts): no central umbilication, not dome shaped, irregular surface, can involve palms and soles
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Symptoms and Signs – Differential Diagnosis of Mongolian Spot
• Acquired bilateral nevus of Ota-like macules
• Dermal melanocytic hamartoma (macular blue nevus)
• Late-onset dermal melanosis
• Nevus of Ito
• Trauma
• Acquired bilateral nevus of Ota-like macules
• Dermal melanocytic hamartoma (macular blue nevus)
• Late-onset dermal melanosis
• Nevus of Ito
• Trauma
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Symptoms and Signs – Differential Diagnosis of Acute Monoarthritis
• Amyloidosis, familial Mediterranean fever
• Avascular necrosis of bone
• Behçet’s syndrome
• Bone malignant neoplasm
• Bowel disease–associated arthritis
• Foreign body synovitis
• Gout
• Hemarthrosis
• Hemoglobinopathies
• Hypertrophic pulmonary osteoarthropathy
• Infectious arthritis (e.g., gonococcal, Lyme disease, viral, mycobacteria, fungi)
• Juvenile RA
• Osteoarthritis
• Osteomyelitis
• Overuse
• Pseudogout
• Psoriatic arthritis
• Sarcoidosis
• Trauma
• Vasculitic syndromes
• Amyloidosis, familial Mediterranean fever
• Avascular necrosis of bone
• Behçet’s syndrome
• Bone malignant neoplasm
• Bowel disease–associated arthritis
• Foreign body synovitis
• Gout
• Hemarthrosis
• Hemoglobinopathies
• Hypertrophic pulmonary osteoarthropathy
• Infectious arthritis (e.g., gonococcal, Lyme disease, viral, mycobacteria, fungi)
• Juvenile RA
• Osteoarthritis
• Osteomyelitis
• Overuse
• Pseudogout
• Psoriatic arthritis
• Sarcoidosis
• Trauma
• Vasculitic syndromes
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Symptoms and Signs – Differential Diagnosis of Monocytosis
• Inflammatory bowel disease (IBD)
• Lymphomas
• Monocytic leukemia
• Myeloma
• Neoplasms
• Parasites
• Sarcoidosis
• Viral diseases
• Inflammatory bowel disease (IBD)
• Lymphomas
• Monocytic leukemia
• Myeloma
• Neoplasms
• Parasites
• Sarcoidosis
• Viral diseases
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Symptoms and Signs – Differential Diagnosis of Mononeuropathy
• Herpes zoster
• Herpes simplex
• Vasculitis
• Trauma, compression
• Diabetes
• Postinfectious or postinflammatory
• Herpes zoster
• Herpes simplex
• Vasculitis
• Trauma, compression
• Diabetes
• Postinfectious or postinflammatory
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Symptoms and Signs – Differential Diagnosis of Mononucleosis
• Acute retroviral syndrome of HIV, lymphoma
• Bacterial and viral causes of pharyngitis
• Heterophil-negative infectious mononucleosis caused by cytomegalovirus (CMV); although clinical presentation may be similar, CMV more frequently follows transfusion.
• Toxoplasmosis
• Acute retroviral syndrome of HIV, lymphoma
• Bacterial and viral causes of pharyngitis
• Heterophil-negative infectious mononucleosis caused by cytomegalovirus (CMV); although clinical presentation may be similar, CMV more frequently follows transfusion.
• Toxoplasmosis
