Chronic Inflammatory Disorders and Blistering Diseases Flashcards
What does Psoriasis look like?
Salmon plaque with a silver scale
What nail presentations may be common with Psoriasis?
Yellow-brown nails
Oncolysis - separation of nail and nail bed
Psoriasis is a type of ____ disease
Autoimmune
What is the Koebner phenomenon and what is it seen with?
- Seen with psoriasis and lichen planus
= Local trauma induces psoriasis lesions
What is the Auspitz sign and what is it seen with?
- Seen with psoriasis
= bleeding when scale lifted from psoriasis plaque
Lichen Planus 6 P’s
Purple Pruritic Polygonal Planar Papule Plaque
Lichen Planus 6 P’s
Purple Pruritic Polygonal Planar Papule Plaque
What can be seen on the papules with Lichen Planus?
Wickham striae = white dots
What can be seen on the papules with Lichen Planus?
Wickham striae = white dots
Lichen Planus may cause what malignancy?
Squamous cell carcinoma
Lichen planus resolves spontaneously and leaves behind?
Hyperpigmentations
What are the 2 chronic inflammatory disorders?
Psoriasis
Lichen Planus
Pemphigus involves what autoantibodies?
IgG
Pemphigus involves what autoantibodies?
IgG
What do IgG antibodies do with Pemphigus?
Disrupt intracellular adhesion = blisters
Pemphigus shows what type of pattern of IgG deposits?
Net-like
Pemphigus vulgaris vesicles rupture - easy or hard?
Easily rupture
Bullous Pemphigoid affects what patient population?
Elderly
Where do antibodies deposit with Bullous Pemphigoid?
Dermoepidermal junction
Where do antibodies deposit with Bullous Pemphigoid?
Dermoepidermal junction
Bullous Pemphigoid vesicles rupture - easy or hard?
Hardly ever rupture
Bullous Pemphigoid vesicles are commonly on flexor surfaces and on what level of the skin?
Subepidermal
Dermatitis Herpetiformis
Grouped vesicles, bilateral and symmetric
Dermatitis Herpetiformis
Grouped vesicles, bilateral and symmetric
Dermatitis Herpetiformis often affects extensor surfaces. What disease is it associated with and what antibodies develop?
Celiac disease
- IgA antibodies to gluten
Dermatitis Herpetiformis is associated with Celiac disease and develops IgA antibodies. How do you get a blister from that?
IgA antibodies to gluten cross react with reticulin
= subepidermal blister
Dermatitis Herpetiformis are commonly on extensor surfaces and on what level of the skin?
Subepidermal
What are the 2 types of NON-inflammatory blisters?
Epidermolysis Bullosa
Porphyria
What are the 2 types of NON-inflammatory blisters?
Epidermolysis Bullosa
Porphyria
Where are blisters located with Epidermolysis Bullosa?
Sites of pressure, rubbing, trauma
Epidermolysis Bullosa involves inherited defects in?
Structural proteins
Porphyria involves issues with?
Porphyrin metabolism
Symptoms of Porphyria?
Vesicles with scarring made worse with sunlight
Symptoms of Porphyria?
Vesicle with scarring made worse with sunlight