Ryan Shared "Dermatology" - 38 Picmonics
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Dermatology
Polymyositis / Dermatomyositis Disease
- Pathophysiology
- Idiopathic Inflammatory Myopathy
- More Common in Women
- Endomysial Inflammation with CD8+ Cells (Polymyositis)
- Perimysial Inflammation with CD4+ Cells (Dermatomyositis)
- Signs and Symptoms (Both)
- Symmetric Proximal Muscle Weakness
- Dysphagia
- Lung and Cardiac Involvement
- Signs and Symptoms (Dermatomyositis)
- Malar Rash
- Shawl-like Shoulder Rash
- Gottron Papules on Knuckles
- Heliotrope Rash
3 mins
Polymyositis / Dermatomyositis Diagnosis and Treatment
- Diagnosis
- Increased CK (CPK)
- Increased Aldolase
- Anti-JO-1 Antibody
- Anti-SRP Antibody
- Antinuclear Antibody
- Abnormal EMG
- Biopsy
- Treatment
- Corticosteroids
- Methotrexate
- Azathioprine
- Treatment For Resistant Disease
- Intravenous Immunoglobulin (IVIG)
- Cyclophosphamide
- Rituximab
- Calcineurin Inhibitors
2 mins
Melanoma Diagnosis
- Signs
- ABCDE Mnemonic
- Asymmetry
- Border irregularity
- Color variation
- Diameter > 6mm
- Evolution over time
- Diagnosis
- S-100 Tumor Marker
- LDH (Lactate Dehydrogenase) Screens for Metastasis
- Treatment
- Wide Local Excision
- Adjuvant Therapy
1 min
Melanoma Mechanism and Characteristics
- Mechanism
- Associated with Sunlight Exposure
- Mutation in B-RAF kinase
- Large Number of Moles
- Fair-Skinned People at Higher Risk
- Growth Phases
- Radial Growth Phase
- No Metastasis
- Vertical Growth Phase
- Depth of Tumor Correlates with Risk of Metastasis
1 min
Atopic Dermatitis / Eczema
- Presentation
- Pruritic Vesicles
- Inflammatory Skin Rash
- Cheeks in Children
- Skin Flexural Areas
- Associated with Asthma and Allergic Rhinitis
- Treatment
- Tacrolimus
- Moisturizers
- Corticosteroids
- Phototherapy
- Avoid Triggers
- Antihistamines
2 mins
Psoriasis
- Presentation
- Epidermal Hyperproliferation Keratinocytes
- Defined Red Salmon Plaques
- Silvery Scales
- Extensor Surfaces
- Bleeding when Removed
- Auspitz Sign
- Pruritus
- Nail Changes
- Histological Finding
- Munro Microabscesses
- Nucleated Cells in Stratum Corneum
- Treatment
- Retinoids
- Topical Corticosteroids
- Tar
- Immunosuppressants
2 mins
Lichen Planus
- Pathophysiology
- Mucocutaneous Disorder
- 30-60 year olds
- Signs & Symptoms
- Pruritic
- Plaques or Papules
- Purple & Polygonal
- Often Mucosal or Genital Involvement
- Wickham Striae
- Diagnosis
- Biopsy
- Sawtooth Infiltrate of Lymphocytes
- Treatment
- Topical Corticosteroids
- Considerations
- Hepatitis C Association
2 mins
Bullous Pemphigoid
- Linear Deposits of IgG
- Affects Hemidesmosomes
- Epidermal Basement Membrane
- Tense Blisters on Skin
- Nikolsky Negative
- Contain Eosinophils
- Rarely Affect Oral Mucosa
2 mins
Dermatitis Herpetiformis
- Autoimmune deposition of IgA
- Strong association with celiac disease
- Resembles vesicles in herpes
- Resolves with gluten free diet
- Dapsone treatment
Erythema Multiforme
- targetoid rash
- Commonly associated with HSV infection
- Associated with mycoplasma pneumoniae
- Associated with malignancy
- Associated with sulfa drugs
- Associated with phenytoin
- Associated with SLE
- Associated with B-lactams
- Associated with CD8+T cells
Seborrheic keratosis
- Appear during fourth decade
- Stuck-on, waxy
- Benign
Acanthosis Nigricans
- Associations
- Endocrine Disorders
- Diabetes Mellitus
- Obesity
- Malignancy
- Presentation
- Velvety Plaques
- Dark, Thickened Flexural Areas
- Diagnosis
- Hyperkeratosis with Melanocytes
- Treatment
- Treat Underlying Disorder
2 mins
Basal Cell Carcinoma of the Skin
- Pathophysiology
- Most Common Skin Cancer
- 2/3 of Cases Due to UV Light Exposure
- Pink, Pearl-like Lesions
- Rolled Borders
- Telangiectasias
- Commonly Upper Lip
- Diagnosis
- Shave Biopsy
- Pallisading Nuclei
- Treatment
- Mohs Micrographic Surgery
2 mins
Pemphigus Vulgaris
- Pathophysiology
- Autoantibodies against desmosomes
- Symptoms
- Flaccid Bullae on Skin
- Oral Mucosa Involvement
- Intraepidermal Acantholysis
- Fluid Loss
- Infection
- Nikolsky Positive
- Diagnosis
- Biopsy showing Autoantibodies
- Treatment
- IVIG and Plasmapheresis
- Oral Steroids
- Immunosuppressants
2 mins
Erythema Nodosum
- Pathophysiology
- Panniculitis
- Painful Inflammation
- Subcutaneous Fat
- Anterior Shins
- Risk Factors
- Coccidioidomycosis
- Pregnancy or OCP Use
- Crohn's Disease
- Tuberculosis (TB)
- Histoplasmosis
- Sarcoidosis
- Ulcerative Colitis
2 mins
Pityriasis Rosea
- Preceded by Upper Respiratory Tract Infection
- Single "Herald Patch"
- "Christmas Tree" Distribution
- Plaques with Collarette Scale
- Self-resolving in 6-8 Weeks
2 mins
Xeroderma pigmentosum
- Extreme sensitivity to sun
- Defective endonuclease
- Can't repair pyrimidine (usually thymine) dimers
- Nucleotide excision repair occurs in G1 phase
- UVB radiation
Human Papillomavirus (HPV)
- Characteristics
- Non-enveloped
- Circular
- Double Stranded DNA
- Disease
- Warts 1, 2, 6, 11
- Condyloma acuminata
- Type 16, 18
- Cervical Carcinoma
- Penile Carcinoma
- AIDS/Immunocompromised
- Worsened by Smoking
- Diagnosis
- Koilocytic change in squamous epithelium
- Pyknotic Nuclei Surrounded by Clear Halo
- Treatment
- Vaccine Available
4 mins
Albinism
- albinism
- Normal melanocyte number with decreased melanin production
- Due to decreased tyrosinase activity or defective tyrosine transport.
- Increased risk of skin cancer
- Acquired through locus heterogeneity - Mutations at different loci can produce a similar phenotype.
- Autosomal recessive
- Ocular albinism is X-linked recessive
Stevens-Johnson Syndrome
- Etiologies
- Drugs
- Symptoms
- < 10% of Body Surface Area (BSA) Involved
- 10-30% BSA Overlaps with Toxic Epidermal Necrolysis (TEN)
- Fever
- Affects Skin and Mucous Membranes
- Bullae Formation
- Necrosis
- Sloughing of Skin
- High Mortality Rate
- Treatment
- Supportive Care
- IVIG (Intravenous Immunoglobulin)
3 mins
