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​Symptoms and Signs – Differential Diagnosis of Scleroderma
DERMATOLOGIC
• Mycosis fungoides
• Amyloidosis
• Porphyria cutanea tarda
• Eosinophilic fasciitis
• Reflex sympathetic dystrophy
SYSTEMIC
• Idiopathic pulmonary fibrosis
• Primary pulmonary hypertension
• Primary biliary cirrhosis
• Cardiomyopathies
• GI dysmotility problems
• Systemic lupus erythematosus (SLE) and overlap syndromes 
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​Symptoms and Signs – Differential Diagnosis of Scrotal Pain
• Hydrocele
• Incarcerated hernia
• Infection: orchitis, abscess, epididymitis
• Neoplasia: benign, malignant
• Spermatocele
• Torsion: appendages, spermatic cord
• Trauma
• Varicocele
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​Symptoms and Signs – Differential Diagnosis of Scrotal Swelling
• Acute epididymitis
• Folliculitis
• Hernia
• Hydrocele
• Insect bite
• Neoplasm
• Orchitis
• Other: lymphedema, dermatitis, fat necrosis, Henoch-Schönlein purpura, idiopathic scrotal edema
• Sebaceous cyst
• Thrombosis of spermatic vein
• Torsion of epididymis
• Torsion of spermatic cord
• Torsion of testis
• Trauma
• Varicocele
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​Symptoms and Signs – Differential Diagnosis of Seasonal Affective Disorder
• Bipolar affective disorder
• Evaluate for substance use (especially alcohol)
• Major depressive disorder
• Medical illness or medications that may contribute to depression (e.g., endocrine disorders, neurologic disease)
• Minor depression or adjustment disorder
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​Symptoms and Signs – Differential Diagnosis of  Allergic Rhinitis
• Infections (sinusitis; viral, bacterial, or fungal rhinitis)
• Rhinitis medicamentosa (cocaine, sympathomimetic nasal drops)
• Septal obstruction (e.g., deviated septum), nasal polyps, nasal neoplasms
• Systemic diseases (e.g., Wegener’s granulomatosis, hypothyroidism [rare])
• Vasomotor rhinitis (e.g., secondary to air pollutants)
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​Symptoms and Signs – Differential Diagnosis of Right Axis Deviation
• Dextrocardia
• Lateral myocardial infarction
• Left posterior fascicular block
• Mechanical shifts or emphysema causing a vertical heart
• Normal variation
• Pulmonary embolism
• Right ventricular hypertrophy
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​Symptoms and Signs – Differential Diagnosis of Rocky Mountain Spotted Fever
• Acute abdomen
• Bacterial endocarditis
• Bronchitis
• Connective tissue disorders
• Disseminated gonococcal infection
• Drug hypersensitivity reactions
• Ehrlichiosis
• Enteroviral infection
• Gastroenteritis
• Idiopathic thrombocytopenic purpura
• Immune complex vasculitis
• Infectious mononucleosis
• Influenza A
• Kawasaki’s disease
• Leptospirosis
• Lyme disease
• Measles
• Meningococcemia
• Pneumonia
• Rheumatic fever
• Rickettsialpox
• Rubella
• Scarlet fever
• Secondary syphilis
• Sepsis
• Thrombotic thrombocytopenic purpura
• Toxic shock syndrome
• Typhoid fever
• Typhus
• Viral hepatitis
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​Symptoms and Signs – Differential Diagnosis of Rosacea
• Acne vulgaris
• Carcinoid flush
• Contact dermatitis
• Drug eruption
• Facial sarcoidosis
• Idiopathic facial flushing
• Mastocytosis
• Photodermatitis
• Seborrheic dermatitis
• Systemic lupus erythematosus (SLE)
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Kembara Xtra 

Facts about medicine and its subtopic such as anatomy, physiology, biochemistry, pharmacology, medicine, pediatrics, psychiatry, obstetrics and gynecology and surgery.