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​Symptoms and Signs – Differential Diagnosis of  Joint Pain, Posterior Hips, Thigh, Buttocks
• Gluteal muscle strain
• Gluteal muscle strain
• Herpes zoster
• Ischial bursitis
• Ischial bursitis
• Ischial or sacral fracture
• Lumbar spinal stenosis
• Osteitis deformans (Paget’s disease)
• Osteoarthritis of hip
• Osteochondromatosis
• Osteomalacia (pseudofracture)
• Osteomalacia (pseudofracture)
• Osteomyelitis
• Postherpetic neuralgia
• Radiculopathy: L5-S1
• Radiculopathy: L5-S1
• Sciatic neuropathy
• Tumors
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​Symptoms and Signs – Differential Diagnosis of Jugular Venous Distention
• Cardiac tamponade
• Cardiomyopathy (restrictive)
• Chronic obstructive pulmonary disease (COPD)
• Constrictive pericarditis
• Goiter
• Pulmonary hypertension
• Right atrial myxoma
• Right-sided heart failure
• Superior vena cava syndrome
• Tension pneumothorax
• Valsalva maneuver
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​Symptoms and Signs – Differential Diagnosis of Kaposi’s Sarcoma
• Capillary hemangiomas
• Cutaneous lymphoma
• Dermatofibroma
• Granulation tissue
• Hematoma
• Melanoma
• Postinflammatory hyperpigmentation
• Prurigo nodularis
• Pyogenic granuloma
• Stasis dermatitis
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​Symptoms and Signs – Differential Diagnosis of  Keratitis, Noninfectious
• Atopic keratoconjunctivitis
• Chemical injury
• Collagen-vascular disease
• DM (delayed epithelial healing)
• Ectropion/entropion
• Erythema multiforme
• Exophthalmos
• Keratoconjunctivitis sicca
• Lid defects
• Mucous membrane pemphigoid
• Neuroparalytic (cranial nerve VII)
• Neurotrophic (diabetes, cranial nerve V)
• Thermal injury
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