Published on
​Symptoms and Signs – Differential Diagnosis of Felty’s Syndrome
• Drug reaction
• Myeloproliferative disorders
• Lymphoma/reticuloendothelial malignant neoplasms
• Hepatic cirrhosis with portal hypertension
• Sarcoidosis
• TB
• Amyloidosis
• Chronic infections
Picture
Published on
​Symptoms and Signs – Differential Diagnosis of Fetal Alcohol Syndrome
• Williams syndrome
• Velocardiofacial syndrome
• Toluene embryopathy
• Syndromes with overlapping features of FAS
• Other causes of symmetric growth retardation including
• Maternal phenylketonuria
• Fetal anticonvulsant syndrome
• Dubowitz syndrome
• Cornelia de Lange syndrome
• Aneuploidy (T21, T18, T13), intrauterine infection and aneuploidy
Picture
Published on
​Symptoms and Signs – Differential Diagnosis of Epistaxis
• Trauma
• Systemic disorders (hypertension, uremia)
• Rhinitis
• Nasal polyps
• Nasal polyps
• Medications (nasal sprays, nonsteroidal anti-inflammatory drugs [NSAIDs], anticoagulants, antiplatelets)
• Local neoplasms (benign and malignant)
• Infections
• Foreign body
• Desiccation
• Cocaine use
• Coagulopathy (hemophilia, liver disease, disseminated intravascular coagulation [DIC], thrombocytopenia)
• Anatomic malformations
Picture
Published on
​Symptoms and Signs – Differential Diagnosis of Epstein-Barr Infection
• Toxoplasmosis
• Lymphoma
• Heterophil-negative infectious mononucleosis caused by cytomegalovirus (CMV)
• Bacterial and viral causes of pharyngitis
• Although clinical presentation is similar, CMV more frequently follows transfusion.
• Acute retroviral syndrome of HIV
Picture
Published on
​Symptoms and Signs – Differential Diagnosis of Organic Erectile Dysfunction 
• Trauma: pelvic fracture, prostate surgery, penile fracture
• Systemic disease: diabetes mellitus (DM), renal failure, hepatic cirrhosis
• Structural abnormalities: Peyronie’s disease
• Psychogenic causes: depression, performance anxiety, marital conflict
• Neurogenic abnormalities: somatic nerve neuropathy, CNS abnormalities
• Medications: β-blockers, diuretics, antidepressants, H2 blockers, exogenous hormones, alcohol, α-blockers, nicotine abuse, finasteride, others
• Endocrine causes: hyperprolactinemia, hypogonadotropic hypogonadism, testicular failure, estrogen excess
Picture
Published on
​Symptoms and Signs – Differential Diagnosis of Genitalia Erosions 
• Squamous cell carcinoma
• Pemphigus vulgaris
• Lichen sclerosus
• Lichen planus
• Intraepithelial neoplasia
• Impetigo
• Extramammary Paget’s disease
• Erythema multiforme
• Candidiasis
• Bullous pemphigoid
Picture
Published on
​Symptoms and Signs – Differential Diagnosis of Erysipelas
• Other types of cellulitis
• Necrotizing fasciitis
• Deep venous thrombosis (DVT)
• Contact dermatitis
• Erythema migrans (Lyme disease)
• Insect bite
• Herpes zoster
• Erysipeloid
• Acute gout
• Pseudogout
Picture
Published on
​Symptoms and Signs – Differential Diagnosis of  Erythema Multiforme
• Chronic urticaria
• Contact dermatitis
• Drug eruption
• Granuloma annulare
• Lichen planus
• Pemphigus vulgaris
• Pityriasis rosea
• Polymorphic light eruption
• Secondary syphilis
• Serum sickness
• Viral exanthem
Picture