| Clinical Findings |
Differential Diagnosis |
Differential Tests |
| CUTANEOUS LESIONS |
|
|
Bruising |
Trauma |
Rule out other disease |
| |
Hemophilia |
Prothrombin time, partial prothromboplastin time |
| |
Von Willebrand's disease |
Von Willebrand's panel |
| |
Henoch Schonlein purpura |
Typical distribution of lesions |
| |
Purpura fulminans |
Rule out sepsis |
| |
Ehlers-Danlos syndrome |
Hyperextensibility |
Local erythema or bullae |
Burn |
Clinical history and characteristics |
| |
Staphylococcal impetigo |
Culture, Gram stain |
| |
Bacterial cellulitis |
Culture, Gram stain |
| |
Pyoderma gangrenosum |
Culture, Gram stain |
| |
Photosensitivity and phototoxicity reactions |
History of sensitizing agent, oral or topical reactions |
| |
Frostbite |
Clinical history and characteristics |
| |
Herpes, zoster or simplex |
Scraping, culture |
| |
Epidermolysis bullosa |
Skin biopsy |
| |
Contact dermatitis, allergic or irritant |
Clinical characteristics |
| |
|
OCULAR FINDINGS |
|
|
Retinal hemorrhage |
Shaking or other trauma |
|
| |
Bleeding disorder |
Coagulation studies |
| |
Neoplasm |
|
| |
Resuscitation |
History |
Conjunctival hemorrhage
|
Trauma |
Culture, Gram stain |
| |
Bacterial or viral conjunctivitis |
History |
| |
Severe coughing |
|
Orbital swelling
|
Trauma |
|
| |
Orbital or periorbital cellulitis |
Complete blood count, culture, sinus radiographs |
| |
Metatastic disease |
Radiograph, CT scan, CNS examination |
| |
Epidural hematoma |
Radiograph, CT scan, CNS examination |
| |
| HEMATURIA |
Trauma |
Rule out other disease |
| |
Urinary tract infection |
Culture |
| |
Acute or chronic forms of glomerular injury (e.g., glomerulonephritis) |
Renal function tests, biopsy |
| |
Hereditary or familial renal disorders (e.g., familial benign recurrent hematuria) |
History |
| |
Other (e.g., vasculitis, thrombosis, neoplasm, anomalies, stones, bacteremia, exercise) |
History, cultures, radiologic studies |
| |
| ACUTE ABDOMEN |
Trauma |
Rule out other disease |
| |
Intrinsic gastrointestinal disease (e.g., peritonitis, obstruction, inflammatory bowel disease, Meckel's diverticulum) |
Radiographs, stool tests, and others |
| |
Intrinsic urinary tract disease (infection, stone) |
Culture, ultrasound, intravenous pyelogram |
| |
Genital problems (e.g., torsion of spermatic cord, ovarian cyst) |
History, physical examination, ultrasound, radiograph, laparoscopy |
| |
Vascular accident, as in sickle cell crisis |
Angiography, sickle cell studies |
| |
Other (e.g., mesenteric adenitis, strangulated hernia, anaphylactoid purpura, pulmonary disease, pancreatitis, lead poisoning, diabetes) |
As appropriate |
| |
OSSEOUS LESIONS |
|
|
Fractures (multiple or in various stages of healing)
|
Trauma |
|
| |
Osteogenesis imperfecta |
Radiographic and blue sclerae |
| |
Rickets |
Nutritional history |
| |
Birth trauma |
Birth history |
| |
Hypophosphatasia |
Decreased alkaline phosphatase |
| |
Leukemia |
Complete blood count, bone marrow |
| |
Neuroblastoma |
Bone marrow, biopsy |
| |
Status after osteomyelitis or septic arthritis |
History |
| |
Neurogenic sensory deficit |
Physical examination |
| |
| METAPHYSEAL LESIONS, EPIPHYSEAL LESIONS, OR BOTH |
Trauma |
|
| |
Scurvy |
Nutritional history |
| |
Menkes syndrome |
Decreased copper, decreased ceruloplasmin |
| |
Syphilis |
Serology |
| |
"Little League" elbow |
History |
| |
Birth trauma |
History |
| |
| SUBPERIOSTEAL OSSIFICATION |
Trauma |
|
| |
Osteogenic malignancy |
Radiograph and biopsy |
| |
Syphilis |
Serology tests |
| |
Infantile cortical hyperostosis |
No metaphyseal irregularity |
| |
Osteoid osteoma |
Response to aspirin |
| |
Scurvy |
Nutritional history |
| |
| SUDDEN INFANT DEATH SYNDROME |
Unexplained death |
Autopsy |
| |
Trauma |
Autopsy |
| |
Asphyxia (aspiration, nasal obstruction, laryngospasm, sleep apnia) |
"Near-miss" history |
| |
Infection (e.g., botulism) |
Cultures, bacterial and viral |
| |
Immunodeficiency |
Immunoglobulins |
| |
Cardiac arrhythmia |
Autopsy |
| |
Hypoadrenalism |
Electrolytes, ACTH stimulation test |
| |
Metabolic abnormality |
Ca++, Mg++, other |
| |
Hypersensitivity to cow's milk protein |
|