Study Pediatric Genetic & Metabolic Disorders for the USMLE
With Picmonic, facts become pictures. We've taken what the science shows - image mnemonics work - but we've boosted the effectiveness by building and associating memorable characters, interesting audio stories, and built-in quizzing. Whether you're studying for your classes or getting ready for a big exam, we're here to help.
Pediatrics | Medicine (MD/DO) School Study Aid
Patau Syndrome
- Pathophysiology
- Trisomy 13
- Signs and Symptoms
- Severe Intellectual Disability
- Microcephaly
- Holoprosencephaly
- Microphthalmia
- Polydactyly
- Cleft Lip/Cleft Palate
- Rocker Bottom Feet
- Omphalocele
- Cystic Kidneys
- Ventricular Septal Defect (VSD)
2 mins
Edwards Syndrome
- Pathophysiology
- Trisomy 18
- Signs and Symptoms
- Intellectual Disability (Mental Retardation)
- Rocker Bottom Feet
- Ventricular Septal Defect (VSD)
- Clenched Hands
- Overlapping Fingers
- Low-Set Ears
- Micrognathia
- Prominent Occiput
- Omphalocele
- Meckel's Diverticulum
- Horseshoe Kidney
- Malrotation of Intestines
3 mins
Down Syndrome
- Pathophysiology
- Trisomy 21
- Meiotic Nondisjunction
- Signs and Symptoms
- Intellectual Disability (Mental Retardation)
- Single palmar crease
- Flat Facies
- Duodenal Atresia
- Hirschsprung's Disease
- Septum Primum Type ASD
- Endocardial Cushion Defects
- Prominent Epicanthal Folds
- Increased Risk of Acute Lymphoblastic Leukemia
- Alzheimer's Disease
3 mins
Myotonic Dystrophy
- Pathophysiology
- Autosomal Dominant
- Trinucleotide Repeat
- CTG
- Signs and Symptoms
- Facial Muscle Weakness
- Frontal Balding
- Sustained Grip
- Conduction Defects
- Cataracts
- Selective Atrophy of Type 1 Fibers
- Testicular Atrophy
2 mins
Fragile X
- Pathophysiology
- Trinucleotide Repeat
- CGG Repeats
- FMR1 Gene
- X-linked Dominant
- Signs and Symptoms
- Developmental Delay
- Autism
- Large Ears
- Large Jaw
- Long Face
- Macroorchidism
2 mins
Friedreich's Ataxia
- Trinucleotide Repeat
- GAA Repeat
- Frataxin
- Mitochondrial Dysfunction
- Autosomal Recessive
- Hammertoes
- High Arches
- Kyphoscoliosis
- Lateral Corticospinal Tract
- Posterior Column
- Spinocerebellar Tract
- Type I Diabetes Mellitus
- Hypertrophic Cardiomyopathy
1 min
Huntington's Disease
- Pathophysiology
- Autosomal Dominant
- Trinucleotide Repeat
- CAG Repeats
- Chromosome 4
- Anticipation
- Caudate
- Decrease of ACh
- Decrease of GABA
- Signs and Symptoms
- Chorea
- Dementia
- Depression
- Glutamate Toxicity
- Neuronal Death via NMDA Binding
3 mins
Muscular Dystrophy
- Mechanism
- X-linked Recessive
- Signs and Symptoms
- Muscle Weakness
- Motor Problems
- Gower Sign
- Large Calves
- Waddling Gait
- Loss of Ambulation
- Consideration
- Cardiac and Respiratory Failure
2 mins
Angelman's Syndrome
- Mechanism
- Paternal Imprinting
- Deletion of Chromosome 15q (Maternal Deletion)
- Signs And Symptoms
- Happy Puppet Syndrome
- Inappropriate Laughter
- Ataxia
- Severe Intellectual Disability (Mental Retardation)
- Seizure
- Abnormal EEG
2 mins
Prader-Willi Syndrome
- Mechanism
- Maternal Imprinting
- Deletion of Chromosome 15q (Paternal Deletion)
- Signs And Symptoms
- Hyperphagia
- Truncal Obesity
- Hypogonadism
- Undescended Testicles (Cryptorchidism)
- Intellectual Disability (Mental Retardation)
- Neonatal Hypotonia (Floppy Baby)
- Almond Shaped Eyes
- Narrow Bifrontal Diameter
- Thin Upper Lip
3 mins
Thymic Aplasia (DiGeorge Syndrome)
- Pathophysiology
- DiGeorge Syndrome
- 22q11 Deletion
- Failure to Develop Third and Fourth Pharyngeal Pouches
- Signs and Symptoms
- Undeveloped Thymus
- T Cell Deficiency
- Recurrent Viral and Fungal Infections
- Undeveloped Parathyroids
- Hypocalcemia
- Tetany
- Aortic Defects
- Congenital Heart Defects
- Diagnosis
- Absent Thymic Shadow on CXR
2 mins
Cri Du Chat
- Pathophysiology
- Congenital Deletion of Short Arm of Chromosome 5p
- Signs and Symptoms
- High Pitched Cry/Mewing
- Microcephaly
- Hypotonia
- Difficulty Sucking and Swallowing
- Epicanthal Folds
- Widely Spaced Eyes
- Wide & Flat Nasal Bridge
- High Arched Palate
- Intellectual Disability
- Cardiac Abnormalities
3 mins
Marfan Syndrome
- Mechanism
- Fibrillin-1 Mutation
- Symptoms
- Autosomal Dominant
- Tall
- Arachnodactyly
- Pectus Excavatum
- Hypermobile Joints
- Aortic Aneurysm And Dissection
- Mitral Valve Prolapse (MVP)
- Subluxation of Lens (Superior)
2 mins
Williams Syndrome
- Pathophysiology
- Microdeletion Of Long Arm Of Chromosome 7
- Elastin Gene
- Signs and Symptoms
- Elfin Facies
- Intellectual Disability
- Extreme Friendliness with Strangers
- Well Developed Verbal Skills
- Cardiovascular Problems
- Hypercalcemia
- Increased Sensitivity To Vitamin D
2 mins
Ehlers-Danlos Syndrome Types
- Types
- Types 1 and 2 - Classical
- Type V Collagen Mutation
- Joints and Skin
- Type 3 - Hypermobility
- Most Common
- Tenascin X Deficiency
- Joint Instability
- Type 4 - Vascular
- Type III Collagen Mutation
- Vascular and Organ Rupture
2 mins
Ehlers-Danlos Syndrome Disease
- Pathophysiology
- Faulty Collagen Synthesis
- Autosomal Dominant or Recessive
- Various Severities
- Signs and Symptoms
- Hypermobile Joints
- Hyperextensible Skin
- Easy Bruising/Bleeding
- Berry (Saccular) Aneurysm
- Considerations
- Brighton Criteria
2 mins
Essential Fructosuria
- Autosomal Recessive
- Defect in fructokinase
- Fructose to fructose 1-P
- Benign
- Fructose appears in blood and urine
- Fructose does not enter cells
54 secs
Fructose Intolerance
- Pathophysiology
- Deficiency of Aldolase B
- Fructose 1-P To DHAP And GA
- Accumulation Of Fructose-1-Phosphate
- Inhibition Of Glycogenolysis
- Inhibition Of Gluconeogenesis
- Clinical Features
- Hypoglycemia
- Vomiting
- Jaundice
- Cirrhosis
- Autosomal Recessive
2 mins
Classic Galactosemia
- Pathophysiology
- Autosomal Recessive
- Galactose-1-phosphate uridyltransferase is Absent (GALT)
- Impaired Galactose-1-P to UDP-Galactose
- Galactitol Accumulation in Lens
- Signs and Symptoms
- Infantile Cataracts
- Failure to Thrive
- Hepatomegaly
- Jaundice
- Intellectual Disability
- Increased Risk E. Coli Sepsis
2 mins
Galactokinase Deficiency
- Autosomal Recessive
- Galactose to Galactose 1P
- Galactose Appears in Blood and Urine
- Benign
- Infantile Cataracts
- Failure to Develop a Social Smile
2 mins
Alkaptonuria
- Autosomal Recessive
- Deficiency of homogentisic acid oxidase
- In degradative pathway of tyrosine to fumarate
- Homogentisic acid harmful to cartilage
- Arthritis
- Dark Connective Tissue
- Urine turns black on standing
1 min
Hartnup Disease
- Pathophysiology
- Autosomal Recessive
- Neutral amino acids
- Defective Transporter
- Renal and Intestinal cells
- Signs and Symptoms
- Causes tryptophan excretion in urine
- Leads to Pellagra
- Diarrhea
- Dermatitis
- Dementia
2 mins
Phenylketonuria (PKU)
- Pathophysiology
- Decreased Phenylalanine Hydroxylase
- Decreased Tetrahydrobiopterin Cofactor
- Autosomal Recessive
- Tyrosine Becomes Essential
- Phenylalanine Found in Nutrasweet
- Symptoms
- Musty or Mousy Body Odor
- Growth Retardation
- Seizures
- Intellectual Disability
- Hypopigmentation
2 mins
Maternal Phenylketonuria
- Pathophysiology
- Lack of Proper Diet During Pregnancy; Like NutraSweet
- Signs and Symptoms
- Congenital Heart Defects
- Growth Retardation
- Intellectual Disability (Mental Retardation)
- Microcephaly
2 mins
Maple Syrup Urine Disease
- Pathophysiology
- Defect in alpha ketoacid dehydrogenase
- Blocked degradation of branched chain amino acids
- Leucine
- Isoleucine
- Valine
- Signs and Symptoms
- Seizures
- Intellectual Disability
1 min
Pyruvate Dehydrogenase Deficiency
- Characteristics
- X-Linked
- Acquired from Thiamine Deficiency
- Backup of Alanine and Pyruvate
- Symptoms and Complications
- Neurologic Defects
- Lactic Acidosis
- Interventions
- Ketogenic Nutrients
- Lysine and Leucine (Ketogenic Nutrients)
2 mins
Ornithine Transcarbamylase Deficiency
- Pathophysiology
- Most Common Urea Cycle Disorder
- X-Linked Recessive
- Signs and Symptoms
- Hyperammonemia
- Decreased BUN
- Carbamoyl Phosphate is Converted to Orotic Acid
- Pyrimidine Synthesis Pathway
- Evident in Babies
3 mins
Cystinuria
- Pathophysiology
- Defect of Renal Tubular Amino Acid Transporter
- C-O-L-A Acronym
- Cystine
- Ornithine
- Lysine
- Arginine
- Signs and Symptoms
- Excess Cystine in Urine
- Hexagonal Crystals
- Staghorn Kidney Stones
- Diagnosis
- Cyanide Nitroprusside Test
- Treatment
- Acetazolamide to Alkalinize the Urine
3 mins
Orotic Aciduria
- Pathophysiology
- Autosomal Recessive
- Defect in UMP Synthase
- De Novo Pyrimidine Synthesis Pathway
- Symptoms
- Increased Orotic Acid in Urine
- Megaloblastic Anemia
- No Response to B12 or Folate
- Non-Hyperammonemic
- Failure to Thrive
- Treatment
- Oral Uridine Monophosphate
2 mins
Hyperammonemia
- Pathophysiology
- Hereditary Urea Cycle Defects
- Acquired Through Liver Disease
- Inhibits the Citric Acid Cycle
- Signs & Symptoms
- Somnolence
- Slurring of Speech
- Tremor
- Cerebral Edema
- Vomiting
- Blurring of Vision
- Treatment
- Limit Protein in Diet
- Lactulose
- Benzoate Binds Amino Acid for Excretion
- Phenylbutyrate
4 mins
Homocystinuria
- Pathophysiology
- Autosomal Recessive
- 4 Forms
- Cystathionine Synthase Deficiency
- Decreased Affinity of Cystathionine Synthase For Vitamin B6
- Methionine Synthase Deficiency
- Methylenetetrahydrofolate Reductase (MTHFR) Deficiency
- Signs and Symptoms
- Marfanoid Body Habitus
- Kyphosis
- Lens Subluxation (Inferior)
- Intellectual Disability
- Atherosclerosis
- Consideration
- Dietary Deficiencies Can Elevate Homocysteine Levels
3 mins
G6PD Mechanism
- Turns NADP+ to NADPH
- NADPH Used by Glutathione Reductase
- Detoxifies Free Radicals and Peroxides
- X-linked Recessive
2 mins
G6PD Deficiency
- X-linked Recessive
- Hemolytic Anemia
- Inflammatory Response
- Fava Beans
- Sulfonamides
- Primaquine
- Anti TB Drugs
- Heinz Bodies
- Bite Cells
- Prevalent Among African Americans due to Increased Malarial Resistance
2 mins
Adenosine Deaminase Deficiency
- Adenosine to Inosine
- Excess ATP
- Inhibition of Ribonucleotide Reductase
- Prevents DNA Synthesis
- Decreases B Cells and T Cells
- Major cause of SCID
1 min
Lesch-Nyhan Syndrome
- X-linked Recessive
- Absence of HGPRT
- Hypoxanthine to IMP
- Guanine to GMP
- Excess uric acid
- Gout
- Retardation
- Self-mutilation
- Choreoathetosis
- PRPP is increased
2 mins
Von Gierke Disease
- Pathophysiology
- Autosomal Recessive
- Type I Glycogen Storage Disease
- Glucose-6-Phosphatase Deficiency
- Signs and Symptoms
- Increased Glycogen in Liver
- Hepatomegaly
- Enlarged Kidneys
- Severe Fasting Hypoglycemia
- Increased Triglycerides
- Increased Uric Acid (Gout)
- Increased Lactic Acid
- Doll-like Facies
- Treatment
- Continuous Oral Glucose (or Cornstarch)
- Avoid Fructose and Galactose
2 mins
Pompe Disease
- Pathophysiology
- Type II Glycogen Storage Disease
- Autosomal Recessive
- Deficiency of Lysosomal Alpha 1,4 Glucosidase
- Acid Maltase
- Signs and Symptoms
- Hypertrophic Cardiomyopathy
- Hepatomegaly
- Macroglossia
- Hypotonia
- Diagnosis
- Increased Glycogen within Lysosomes
- Increased Lactate Dehydrogenase (LDH)
- Increased Creatine Kinase (CK/CPK)
2 mins
Cori Disease
- Pathophysiology
- Type III Glycogen Storage Disease
- Deficiency of Alpha 1, 6 Glucosidase
- Debranching Enzyme
- Limit-Dextrin Accumulation (In Cytosolic Structures)
- Signs and Symptoms
- Hypoglycemia
- Muscle Weakness
- Hypotonia
- Stunted Growth
- Hepatomegaly
- Diagnosis
- Normal Blood Lactic Acid Levels
- Gluconeogenesis Intact
- Increased LFT's
- Increased Creatine Kinase (CK/CPK)
- Treatment
- Continuous Feeding
- High Protein Diet
- Cornstarch (Uncooked)
4 mins
McArdles Disease
- Pathophysiology
- Type V Glycogen Storage Disease
- Muscle Glycogen Phosphorylase Deficiency
- Signs and Symptoms
- Increased Glycogen in Muscle
- Painful Muscle Cramps
- Myoglobinuria
- Normal Lactic Acid
- Treatment
- Vitamin B6
2 mins
Fabry's Disease
- Pathophysiology
- X-linked Recessive
- Alpha-galactosidase A Deficiency
- Increased Ceramide trihexoside
- Early Signs and Symptoms
- Decreased Sweating (Hypohidrosis)
- Angiokeratoma
- Episodic Peripheral Neuropathy
- Late Signs and Symptoms
- Cardiovascular Disease
- Renal Failure
1 min
Hunter Syndrome
- Pathophysiology
- X-linked Recessive
- Mucopolysaccharidoses
- Iduronate Sulfatase Deficiency
- Increased Dermatan Sulfate
- Increased Heparan Sulfate
- Signs and Symptoms
- No Corneal Clouding
- Aggressive Behavior
1 min
Niemann-Pick Disease
- Pathophysiology
- Autosomal Recessive
- Sphingomyelinase Deficiency
- More Common in Ashkenazi Jewish Population
- Signs and Symptoms
- Cherry Red Spot on Macula
- Hepatosplenomegaly
- Neurodegeneration
- Diagnosis
- Foam Cells
1 min
Hurler Syndrome
- Pathophysiology
- Autosomal Recessive
- Mucopolysaccharidoses
- Alpha-L-Iduronidase Deficiency
- Increased Heparan Sulfate
- Increased Dermatan Sulfate
- Signs and Symptoms
- Hepatosplenomegaly
- Developmental Delay
- Gargoylism
- Corneal Clouding
- Airway Obstruction
2 mins
Tay-Sachs Disease
- Pathophysiology
- Autosomal Recessive
- Hexosaminidase A Deficiency
- Increased GM2 Ganglioside
- More Common in Ashkenazi Jewish Population
- Signs and Symptoms
- Cherry Red Spot on Macula
- Neurodegeneration
- Developmental Delay
- Diagnosis
- Onion Skin Lysosomes
1 min
Krabbe Disease
- Pathophysiology
- Autosomal Recessive
- Galactocerebrosidase Deficiency
- Increased Psychosine
- Signs and Symptoms
- Developmental Delay
- Peripheral Neuropathy
- Optic Atrophy
- Diagnosis
- Globoid Cells
1 min
Gauchers Disease
- Pathophysiology
- Autosomal Recessive
- Beta Glucocerebrosidase Deficiency
- Diagnosis
- Lipid-laden Macrophages
- Crumpled Tissue Paper
- Signs and Symptoms
- Osteoporosis
- Bone Crises
- Aseptic Necrosis of Femur
- Erlenmeyer Flask Deformity
- Hepatosplenomegaly
- Pancytopenia
2 mins
Metachromatic Leukodystrophy
- Pathophysiology
- Autosomal Recessive
- Arylsulfatase A Deficiency
- Increased Cerebroside Sulfate
- Signs and Symptoms
- Demyelination
- Ataxia
- Dementia
1 min
I-cell Disease (Inclusion Cell Disease)
- Pathophysiology
- Mucolipidosis II
- Autosomal Recessive
- Defective N-acetylglucosaminyl-1-phosphotransferase
- Absent Mannose-6-Phosphate on Glycoproteins
- Accumulation of Lysosomal Debris
- Signs & Symptoms
- Coarse Facies
- Corneal Clouding
- Skeletal Abnormalities
- Diagnosis
- Increased Plasma Lysosomal Enzymes
- Inclusion Bodies
- Considerations
- Poor Prognosis
3 mins
Cystic Fibrosis Mechanisms
- Autosomal Recessive
- CFTR Chromosome 7
- Cl- channel Defect
- Decreased Chloride Secretion
- Increased Na and Water Reabsorption
- Increased Na and Cl in Sweat
- Dehydration of Mucous Layers
2 mins
Cystic Fibrosis Symptoms and Complications
- Recurrent Pulmonary Infections
- Chronic Bronchitis
- Nasal Polyps
- Pancreatic Insufficiency
- Intestinal Obstruction
- Malabsorption and Diarrhea
- Vitamin Deficiencies
- Chronic Hepatic Disease
- Infertility in Males
1 min
Cystic Fibrosis Diagnosis and Treatment
- Diagnosis
- Sweat Chloride Test > 60 mmol/L
- Meconium Ileus
- Treatment
- N-acetylcysteine
- Antibiotic Prophylaxis
- Pulmonary Maintenance
- Lung Transplant
- Vitamin Replacement
1 min
Osteogenesis Imperfecta
- Pathophysiology
- Autosomal Dominant
- Decreased Type I Collagen Production
- Symptoms
- Phenotypically Diverse
- Brittle Bone Disease
- Fractures from Minimal Trauma
- Confused with Child Abuse
- Hearing Loss
- Dental Imperfections
- Blue Sclera
1 min
Von Hippel-Lindau Disease
- Pathophysiology
- Chromosome 3
- Presentation
- Hemangioblastomas
- Medulla, Retina, Cerebellum
- Cysts
- Kidney, Liver, Pancreas
- Develop Bilateral Renal Carcinomas
- Pheochromocytomas
2 mins
Achondroplasia
- Mechanism
- Autosomal Dominant
- Advanced Paternal Age
- Most Common Cause of Dwarfism
- Mutation of FGFR3 (Fibroblast Growth Factor Receptor 3)
- Defective Endochondral Ossification
- Symptoms
- Delayed Motor Milestones
- Shortened Limbs with Normal Axial Skeleton Size
- May Develop Hydrocephalus
- Symptoms of Spinal Stenosis
- Normal Life Span and Fertility
2 mins
Bruton's Agammaglobulinemia
- Pathophysiology
- X-linked Recessive
- Defective Bruton Tyrosine Kinase
- Blocks B Cell Maturation
- Signs & Symptoms
- Decreased Immunoglobulins of All Classes
- Bacterial Infections After Six Months
- Maternal IgG Protects Before Six Months
2 mins
Klinefelter's Syndrome
- Pathophysiology
- Male (XXY)
- Signs and Symptoms
- Eunuchoid Body Shape
- Gynecomastia and Female Hair Distribution
- Testicular Atrophy
- Dysgenesis of Seminiferous Tubules
- Possible Developmental Delay
- Hypogonadism
- Decreased Inhibin B
- Increased FSH
- Abnormal Leydig Cell Function
- Decreased Testosterone
- Increased LH
- Increased Estrogen
- Barr body (inactivated X chromosome)
6 mins
Neurofibromatosis Type 1
- Pathophysiology
- Autosomal Dominant
- Chromosome 17
- Signs and Symptoms
- Neurofibromas
- Optic Glioma
- Lisch Nodules
- Hamartomas
- Cafe Au Lait Spots
- Scoliosis
- Pheochromocytoma
4 mins
Neurofibromatosis Type 2
- Pathophysiology
- Autosomal-Dominant
- Chromosome 22
- Signs and Symptoms
- Vestibular Schwannoma
- Meningioma
- Ependymoma
- Cafe Au Lait Spots
- Cataracts
2 mins
Leber Hereditary Optic Neuropathy
- Characteristics
- Mitochondrial Disease
- Optic Atrophy
- Adolescent Males
- Symptoms/Findings
- Painless Vision Loss
1 min
MELAS
- Characteristics
- Mitochondrial Disease
- Mnemonic
- Mitochondrial Encephalomyopathy
- Lactic Acidosis
- Stroke-like Episodes
- Considerations
- Muscle Weakness
- Seizures
1 min
Kartagener Syndrome (Primary Ciliary Dyskinesia)
- inheritance pattern
- Autosomal Recessive
- pathogenesis
- Immotile Cilia Due to a Dynein Arm Defect
- Symptoms
- Decreased Male and Female Fertility
- Immotile Sperm
- Dysfunctional Fallopian Tube Cilia
- Increased Risk of Ectopic Pregnancy
- Bronchiectasis
- Recurrent Sinusitis
- Chronic Ear Infections
- Conductive Hearing Loss
- Situs Inversus (Dextrocardia on Chest X-Ray)
- SCreening
- Decreased Nasal Nitric Oxide Used as Screening Test
5 mins
Rett Syndrome
- Pathogenesis
- Sporadic Neurological Disorder
- De Novo Mutation of MECP2 on X Chromosome
- RISK FACTORS & SYMPTOMS
- Seen Almost Exclusively In Girls
- Affected Males Die in Utero or Shortly After Birth
- Symptoms Usually Appear Between Ages 1-4
- Developmental Regression
- Motor Impairment
- Intellectual Disability (Mental Retardation)
- Loss of Verbal Abilities
- Seizure
- Stereotyped Hand Wringing
- Decelerated Head Growth (Microcephaly)
- Breathing Problems
- Ataxia
5 mins
Dysbetalipoproteinemia (Type III Familial Dyslipidemia)
- INHERITANCE
- Autosomal Recessive
- PATHOGENESIS
- Defective Apolipoprotein E (Apo E)
- Lab Findings
- Increased Chylomicrons
- Increased VLDL
- Symptoms/Findings
- Premature atherosclerosis
- Tuberoeruptive xanthomas
- Palmar xanthomas
3 mins
Hypertriglyceridemia (Type IV Familial Dyslipidemia)
- INHERITANCE
- Autosomal Dominant
- pathogenesis
- Hepatic Overproduction of VLDL
- Related to Insulin Resistance
- Lab Findings
- Increased VLDL
- Increased Triglycerides (> 1000 mg/dL)
- Symptoms/Findings
- Acute Pancreatitis
- Eruptive Xanthomas
- Increased Risk for Coronary Artery Disease (CAD)
- Increased Risk of Peripheral Vascular Disease
3 mins
Hyperchylomicronemia (Type I Familial Dyslipidemia)
- INHERITANCE
- Autosomal Recessive
- PATHOGENESIS
- Lipoprotein Lipase Deficiency (LPL)
- Altered Apolipoprotein C-II (Apo C-II)
- Lab Findings
- Increased Chylomicrons
- Increased Cholesterol
- Increased Triglycerides
- Symptoms/Findings
- Pancreatitis
- Hepatosplenomegaly
- No Increased Risk for Atherosclerosis
- Eruptive/Pruritic Xanthomas
- Milky White Appearance of Blood When Drawn
3 mins
Familial Hypercholesterolemia (Type IIa Familial Dyslipidemia)
- INHERITANCE
- Autosomal Dominant
- PATHOGENESIS
- Defective or Absent LDL Receptors
- Defective Apolipoprotein B-100 (ApoB-100)
- Lab Findings
- Increased LDL
- Decreased HDL
- Type IIb also has Increased VLDL
- Symptoms/Findings
- Accelerated Atherosclerosis
- Achilles Tendon Xanthomas
- Xanthelasma
- Corneal Arcus
4 mins
Abetalipoproteinemia
- Pathophysiology
- Autosomal Recessive
- Deficiency of Apolipoproteins B-48 and B-100
- MTTP Gene Mutation
- Clinical Features
- Malabsorption
- Steatorrhea
- Failure to Thrive
- Ataxia
- Retinitis Pigmentosa
- Spinocerebellar Degeneration
- Diagnosis
- Lipid-Laden Enterocytes
- Acanthocytes
- Decreased Cholesterol and LDL
- Treatment
- Vitamin E (Alpha-Tocopherol)
4 mins
Retinitis Pigmentosa
- Characteristics
- Hereditary Retinal Degeneration
- Clinical Features
- Night Blindness
- Contrast and Color Defects
- Tunnel Vision
- Associations
- Abetalipoproteinemia
- Kearns-Sayre Syndrome
- Refsum Disease
- Diagnosis
- Bone Spicule-shaped Retinal Deposits
- Considerations
- Permanent Blindness
2 mins
Kearns-Sayre Syndrome
- Characteristics
- Mitochondrial Disease
- Clinical Findings
- Ophthalmoplegia
- Retinitis Pigmentosa
- Heart Block
43 secs
Xeroderma Pigmentosum
- Pathophysiology
- Defective Nucleotide Excision Repair
- Pyrimidine Dimer Accumulation
- Autosomal Recessive
- Susceptible to UVA and UVB Rays
- Presentation
- Actinic Keratosis
- Neurodegeneration
- Photosensitivity
- Corneal Ulcers
- Hyperpigmented Lentigines
- Considerations
- Increased Risk of Skin Cancer
3 mins
Adrenoleukodystrophy
- Pathophysiology
- X-linked Recessive
- Peroxisome Dysfunction
- ABCD1 Mutation
- Presentation
- Adrenal Insufficiency
- Leukoencephalopathy
- Testicular Insufficiency
- Diagnosis
- Increased Very Long-chain Fatty Acids (VLCFA)
- Demyelination
- Genetic Testing
- Treatment
- Lorenzo's Oil
- Hematopoietic Stem Cell Transplantation
3 mins
Hyperlipoproteinemia (Type V Dyslipidemia)
- Pathophysiology
- Increased Cholesterol
- Increased VLDL
- Increased Chylomicrons
- Increased Triglycerides
- Increased Risk of Cardiovascular Disease
- Clinical Features
- Xanthomas
- Acute Pancreatitis
- Diagnosis
- Lipid Panel
- Management
- Lifestyle Changes
- Statins
- Fibrates
2 mins
Type I Spinal Muscular Atrophy
- Pathophysiology
- Lower Motor Neuron Disease
- SMN1 Mutation
- Degeneration of Anterior Horn Cells
- Autosomal Recessive
- Clinical Features
- Symmetric Flaccid Paralysis
- Hypotonia
- Bulbar Palsy
- Extraocular Muscle Sparing
- Respiratory Failure
- Diagnosis
- Genetic Testing
- Treatment
- Supportive Therapy
- Nusinersen
3 mins
MERRF Syndrome
- Characteristics
- Mitochondrial Disease
- Oxidative Phosphorylation Dysfunction
- Young Adults
- Clinical Findings
- Myoclonic Epilepsy
- Dementia
- Ataxia
- Ragged Red Fibers
1 min
Refsum Disease
- Pathophysiology
- Autosomal Recessive
- Peroxisome Dysfunction
- Increased Phytanic Acid
- Clinical Features
- Retinitis Pigmentosa
- Hearing Loss
- Polyneuropathy
- Anosmia
- Ataxia
- Diagnosis
- Genetic Testing
- Management
- Dietary Changes
- Plasmapheresis
3 mins
Li-Fraumeni Syndrome
- Pathophysiology
- Autosomal Dominant
- TP53 Mutation
- Loss of Heterozygosity
- Clinical Features
- Osteosarcoma
- Breast Cancer
- Brain Tumors
- Leukemia/Lymphoma
- Adrenocortical Carcinoma
- Management
- Supportive Care
3 mins
Zellweger Syndrome
- Pathophysiology
- Peroxisome Dysfunction
- Autosomal Recessive
- PEX Gene Mutation
- Clinical Features
- Hypotonia
- Seizures
- Hepatomegaly
- Polycystic Kidney Disease
- Diagnosis
- Increased Very Long-chain Fatty Acids (VLCFA)
- Management
- Supportive Care
- Considerations
- Poor Prognosis
3 mins
Ace Your Medicine (MD/DO) Classes & Exams with Picmonic:
Over 1,990,000 students use Picmonic’s picture mnemonics to improve knowledge, retention, and exam performance.
Choose the #1 Medicine (MD/DO) student study app.
Picmonic for Medicine (MD/DO) covers information that is relevant to your entire Medicine (MD/DO) education. Whether you’re studying for your classes or getting ready to conquer the USMLE Step 1, USMLE Step 2 CK, COMLEX Level 1, or COMLEX Level 2, we’re here to help.
Works better than traditional Medicine (MD/DO) flashcards.
Research shows that students who use Picmonic see a 331% improvement in memory retention and a 50% improvement in test scores.