Poxvirus (Smallpox and Molluscum contagiosum)

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Poxvirus (Smallpox and Molluscum contagiosum)

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Abdominal hernias
Small bowel ischemia and infarction
Familial adenomatous polyposis
Peutz-Jeghers syndrome
Juvenile polyposis syndrome
Colorectal polyps
Colorectal cancer
Irritable bowel syndrome
Diverticulosis and diverticulitis
Appendicitis
Biliary atresia
Jaundice
Cirrhosis
Portal hypertension
Hemochromatosis
Wilson disease
Non-alcoholic fatty liver disease
Cholestatic liver disease
Autoimmune hepatitis
Alcohol-induced liver disease
Alpha 1-antitrypsin deficiency
Primary biliary cirrhosis
Primary sclerosing cholangitis
Hepatitis
Neonatal hepatitis
Reye syndrome
Benign liver tumors
Hepatocellular carcinoma
Gallstones
Biliary colic
Acute cholecystitis
Ascending cholangitis
Chronic cholecystitis
Gallbladder cancer
Acute pancreatitis
Chronic pancreatitis
Pancreatic cancer
Congenital gastrointestinal disorders: Pathology review
Esophageal disorders: Pathology review
GERD, peptic ulcers, gastritis, and stomach cancer: Pathology review
Inflammatory bowel disease: Pathology review
Malabsorption syndromes: Pathology review
Diverticular disease: Pathology review
Appendicitis: Pathology review
Gastrointestinal bleeding: Pathology review
Colorectal polyps and cancer: Pathology review
Pancreatitis: Pathology review
Jaundice: Pathology review
Viral hepatitis: Pathology review
Cirrhosis: Pathology review
Iron deficiency anemia
Beta-thalassemia
Alpha-thalassemia
Sideroblastic anemia
Anemia of chronic disease
Glucose-6-phosphate dehydrogenase (G6PD) deficiency
Autoimmune hemolytic anemia
Sickle cell disease (NORD)
Aplastic anemia
Folate (Vitamin B9) deficiency
Vitamin B12 deficiency
Acute intermittent porphyria
Hemophilia
Hemolytic-uremic syndrome
Von Willebrand disease
Disseminated intravascular coagulation
Heparin-induced thrombocytopenia
Antithrombin III deficiency
Factor V Leiden
Protein C deficiency
Protein S deficiency
Antiphospholipid syndrome
Hodgkin lymphoma
Non-Hodgkin lymphoma
Chronic leukemia
Acute leukemia
Myelodysplastic syndromes
Polycythemia vera (NORD)
Myelofibrosis (NORD)
Essential thrombocythemia (NORD)
Waldenstrom macroglobulinemia
Microcytic anemia: Pathology review
Non-hemolytic normocytic anemia: Pathology review
Intrinsic hemolytic normocytic anemia: Pathology review
Extrinsic hemolytic normocytic anemia: Pathology review
Macrocytic anemia: Pathology review
Heme synthesis disorders: Pathology review
Coagulation disorders: Pathology review
Platelet disorders: Pathology review
Mixed platelet and coagulation disorders: Pathology review
Thrombosis syndromes (hypercoagulability): Pathology review
Lymphomas: Pathology review
Leukemias: Pathology review
Plasma cell disorders: Pathology review
Myeloproliferative disorders: Pathology review
Abscesses
Type I hypersensitivity
Food allergy
Anaphylaxis
Asthma
Type II hypersensitivity
Myasthenia gravis
Pemphigus vulgaris
Type III hypersensitivity
Serum sickness
Systemic lupus erythematosus
Poststreptococcal glomerulonephritis
Type IV hypersensitivity
Graft-versus-host disease
Contact dermatitis
Transplant rejection
Cytomegalovirus infection after transplant (NORD)
Post-transplant lymphoproliferative disorders (NORD)
X-linked agammaglobulinemia
Selective immunoglobulin A deficiency
Common variable immunodeficiency
IgG subclass deficiency
Hyperimmunoglobulin E syndrome
Isolated primary immunoglobulin M deficiency
Thymic aplasia
DiGeorge syndrome
Severe combined immunodeficiency
Adenosine deaminase deficiency
Ataxia-telangiectasia
Hyper IgM syndrome
Wiskott-Aldrich syndrome
Leukocyte adhesion deficiency
Chediak-Higashi syndrome
Chronic granulomatous disease
Complement deficiency
Hereditary angioedema
Asplenia
Thymoma
Ruptured spleen
Immunodeficiencies: T-cell and B-cell disorders: Pathology review
Immunodeficiencies: Combined T-cell and B-cell disorders: Pathology review
Immunodeficiencies: Phagocyte and complement dysfunction: Pathology review
Vitiligo
Albinism
Acne vulgaris
Folliculitis
Rosacea
Hidradenitis suppurativa
Atopic dermatitis
Lichen planus
Pityriasis rosea
Psoriasis
Seborrhoeic dermatitis
Urticaria
Actinic keratosis
Epidermolysis bullosa
Bullous pemphigoid
Erythema multiforme
Stevens-Johnson syndrome
Pressure ulcer
Sunburn
Burns
Frostbite
Cellulitis
Erysipelas
Impetigo
Necrotizing fasciitis
Human papillomavirus
Varicella zoster virus
Poxvirus (Smallpox and Molluscum contagiosum)
Coxsackievirus
Herpes simplex virus
Candida
Malassezia (Tinea versicolor and Seborrhoeic dermatitis)
Pediculus humanus and Phthirus pubis (Lice)
Sarcoptes scabiei (Scabies)
Human herpesvirus 6 (Roseola)
Parvovirus B19
Measles virus
Rubella virus
Skin cancer
Alopecia areata
Telogen effluvium
Onychomycosis
Pigmentation skin disorders: Pathology review
Acneiform skin disorders: Pathology review
Papulosquamous and inflammatory skin disorders: Pathology review
Vesiculobullous and desquamating skin disorders: Pathology review
Skin cancer: Pathology review
Radial head subluxation (Nursemaid elbow)
Developmental dysplasia of the hip
Legg-Calve-Perthes disease
Slipped capital femoral epiphysis
Transient synovitis
Osgood-Schlatter disease (traction apophysitis)
Rotator cuff tear
Dislocated shoulder
Winged scapula
Thoracic outlet syndrome
Carpal tunnel syndrome
Ulnar claw
Erb-Duchenne palsy
Klumpke paralysis
Iliotibial band syndrome
Unhappy triad
Anterior cruciate ligament injury
Patellar tendon rupture
Meniscus tear
Patellofemoral pain syndrome
Sprained ankle
Achilles tendon rupture
Spondylolysis
Spondylolisthesis
Degenerative disc disease
Spinal disc herniation
Sciatica
Compartment syndrome
Rhabdomyolysis
Osteogenesis imperfecta
Craniosynostosis
Pectus excavatum
Arthrogryposis
Genu valgum
Genu varum
Pigeon toe
Flat feet
Club foot
Cleidocranial dysplasia
Achondroplasia
Osteomyelitis
Bone tumors
Osteochondroma
Chondrosarcoma
Osteoporosis
Osteomalacia and rickets
Osteopetrosis
Paget disease of bone
Osteosclerosis
Lordosis, kyphosis, and scoliosis
Osteoarthritis
Spondylosis
Spinal stenosis
Rheumatoid arthritis
Juvenile idiopathic arthritis
Gout
Calcium pyrophosphate deposition disease (pseudogout)
Psoriatic arthritis
Ankylosing spondylitis
Reactive arthritis
Spondylitis
Septic arthritis
Bursitis
Baker cyst
Muscular dystrophy
Polymyositis
Dermatomyositis
Inclusion body myopathy
Polymyalgia rheumatica
Fibromyalgia
Rhabdomyosarcoma
Lambert-Eaton myasthenic syndrome
Sjogren syndrome
Mixed connective tissue disease
Raynaud phenomenon
Scleroderma
Back pain: Pathology review
Rheumatoid arthritis and osteoarthritis: Pathology review
Seronegative and septic arthritis: Pathology review
Gout and pseudogout: Pathology review
Systemic lupus erythematosus (SLE): Pathology review
Scleroderma: Pathology review
Sjogren syndrome: Pathology review
Bone disorders: Pathology review
Bone tumors: Pathology review
Myalgias and myositis: Pathology review
Neuromuscular junction disorders: Pathology review
Muscular dystrophies and mitochondrial myopathies: Pathology review
Spina bifida
Chiari malformation
Dandy-Walker malformation
Syringomyelia
Tethered spinal cord syndrome
Aqueductal stenosis
Septo-optic dysplasia
Cerebral palsy
Spinocerebellar ataxia (NORD)
Transient ischemic attack
Ischemic stroke
Intracerebral hemorrhage
Epidural hematoma
Subdural hematoma
Subarachnoid hemorrhage
Saccular aneurysm
Arteriovenous malformation
Broca aphasia
Wernicke aphasia
Wernicke-Korsakoff syndrome
Kluver-Bucy syndrome
Concussion and traumatic brain injury
Shaken baby syndrome
Epilepsy
Febrile seizure
Early infantile epileptic encephalopathy (NORD)
Tension headache
Cluster headache
Migraine
Idiopathic intracranial hypertension
Trigeminal neuralgia
Cavernous sinus thrombosis
Alzheimer disease
Vascular dementia
Frontotemporal dementia
Lewy body dementia
Creutzfeldt-Jakob disease
Normal pressure hydrocephalus
Torticollis
Essential tremor
Restless legs syndrome
Parkinson disease
Huntington disease
Multiple sclerosis
Central pontine myelinolysis
Acute disseminated encephalomyelitis
Transverse myelitis
JC virus (Progressive multifocal leukoencephalopathy)
Adult brain tumors
Pediatric brain tumors
Brain herniation
Brown-Sequard Syndrome
Cauda equina syndrome
Treponema pallidum (Syphilis)
Friedreich ataxia
Neurogenic bladder
Meningitis
Neonatal meningitis
Encephalitis
Brain abscess
Epidural abscess
Sturge-Weber syndrome
Tuberous sclerosis
Neurofibromatosis
von Hippel-Lindau disease
Amyotrophic lateral sclerosis
Spinal muscular atrophy
Poliovirus
Guillain-Barre syndrome
Charcot-Marie-Tooth disease
Bell palsy
Horner syndrome
Congenital neurological disorders: Pathology review
Headaches: Pathology review
Seizures: Pathology review
Cerebral vascular disease: Pathology review
Traumatic brain injury: Pathology review
Spinal cord disorders: Pathology review
Dementia: Pathology review
Central nervous system infections: Pathology review
Movement disorders: Pathology review
Demyelinating disorders: Pathology review
Adult brain tumors: Pathology review
Pediatric brain tumors: Pathology review
Neurocutaneous disorders: Pathology review
Renal agenesis
Horseshoe kidney
Potter sequence
Hyperphosphatemia
Hypophosphatemia
Hypernatremia
Hyponatremia
Hypermagnesemia
Hypomagnesemia
Hyperkalemia
Hypokalemia
Renal tubular acidosis
Minimal change disease
Amyloidosis
Membranous nephropathy
Lupus nephritis
Rapidly progressive glomerulonephritis
IgA nephropathy (NORD)
Alport syndrome
Kidney stones
Hydronephrosis
Acute pyelonephritis
Chronic pyelonephritis
Prerenal azotemia
Renal azotemia
Postrenal azotemia
Renal cortical necrosis
Chronic kidney disease
Multicystic dysplastic kidney
Medullary cystic kidney disease
Medullary sponge kidney
Renal cell carcinoma
Angiomyolipoma
Nephroblastoma (Wilms tumor)
WAGR syndrome
Posterior urethral valves
Hypospadias and epispadias
Vesicoureteral reflux
Bladder exstrophy
Urinary incontinence
Lower urinary tract infection
Transitional cell carcinoma
Non-urothelial bladder cancers
Congenital renal disorders: Pathology review
Renal tubular defects: Pathology review
Renal tubular acidosis: Pathology review
Acid-base disturbances: Pathology review
Electrolyte disturbances: Pathology review
Renal failure: Pathology review
Nephrotic syndromes: Pathology review
Nephritic syndromes: Pathology review
Urinary incontinence: Pathology review
Urinary tract infections: Pathology review
Kidney stones: Pathology review
Renal and urinary tract masses: Pathology review
Klinefelter syndrome
Turner syndrome
Benign prostatic hyperplasia
Prostate cancer
Testicular cancer
Erectile dysfunction
Amenorrhea
Ovarian cyst
Sex cord-gonadal stromal tumor
Surface epithelial-stromal tumor
Germ cell ovarian tumor
Uterine fibroid
Endometriosis
Endometritis
Endometrial hyperplasia
Endometrial cancer
Cervical cancer
Pelvic inflammatory disease
Breast cancer
Preeclampsia & eclampsia
Placenta previa
Placental abruption
Postpartum hemorrhage
Congenital cytomegalovirus (NORD)
Miscarriage
Ectopic pregnancy
Fetal alcohol syndrome
Disorders of sex chromosomes: Pathology review
Prostate disorders and cancer: Pathology review
Testicular tumors: Pathology review
Uterine disorders: Pathology review
Ovarian cysts and tumors: Pathology review
Cervical cancer: Pathology review
Vaginal and vulvar disorders: Pathology review
Benign breast conditions: Pathology review
Breast cancer: Pathology review
Complications during pregnancy: Pathology review
Congenital TORCH infections: Pathology review
Upper respiratory tract infection
Sinusitis
Congenital pulmonary airway malformation
Sudden infant death syndrome
Acute respiratory distress syndrome
Methemoglobinemia
Emphysema
Chronic bronchitis
Cystic fibrosis
Bronchiectasis
Restrictive lung diseases
Sarcoidosis
Idiopathic pulmonary fibrosis
Pneumonia
Lung cancer
Pancoast tumor
Superior vena cava syndrome
Pneumothorax
Pleural effusion
Mesothelioma
Pulmonary embolism
Pulmonary edema
Pulmonary hypertension
Respiratory distress syndrome: Pathology review
Cystic fibrosis: Pathology review
Pneumonia: Pathology review
Tuberculosis: Pathology review
Deep vein thrombosis and pulmonary embolism: Pathology review
Pleural effusion, pneumothorax, hemothorax and atelectasis: Pathology review
Obstructive lung diseases: Pathology review
Restrictive lung diseases: Pathology review
Apnea, hypoventilation and pulmonary hypertension: Pathology review
Lung cancer and mesothelioma: Pathology review

Assessments

Flashcards

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USMLE® Step 1 questions

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High Yield Notes

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Flashcards

Poxvirus (Smallpox and Molluscum contagiosum)

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Questions

USMLE® Step 1 style questions USMLE

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A 4-year-old girl is brought to her pediatrician for evaluation of skin lesions. The patient’s mother noticed several bumpy skin lesions on her daughter's arm earlier this week. The patient is currently attending daycare and scraped her knee last week but is otherwise healthy. She has not been exposed to any sick contacts, and none of her family members have similar lesions. Vital signs are within normal limits, and physical examination is notable for the following finding:

 
Image reproduced from Wikimedia Commons

These lesions are nontender to palpation. The pathogen responsible for this patient’s clinical presentation was most likely transmitted in which of the following manners?  

External References

First Aid

2024

2023

2022

2021

Molluscum contagiosum p. 161, 487

Papules p. 485

molluscum contagiosum p. 487

Poxviruses

molluscum contagiosum p. 487

Summary

Poxviruses are a family of viruses that cause a range of diseases in humans and animals, including smallpox and molluscum contagiosum. Smallpox is a highly contagious and often fatal disease caused by the variola virus, a member of the poxvirus family. It is characterized by fever, fatigue, and a distinctive rash. Molluscum contagiosum is a skin infection caused by a poxvirus and is characterized by small, firm, raised bumps on the skin. It is contagious and can spread through direct contact or contact with infected items.