Inflammatory Myopathies Flashcards
What are the 3 types of Inflammatory Myopathies?
- Dermatomyositis
- Polymyositis
- Inclusion Body Myositis
Inflammatory Myopathies are autoimmune diseases. What do they present with?
Bilateral proximal muscle weakness and myalgias
Inflammatory Myopathies are autoimmune diseases. What do they present with?
Bilateral proximal muscle weakness and myalgias
What will be elevated and what will be normal in the serum with Inflammatory Myopathies?
Elevated = Creatine Kinase and Aldolase Normal = ESR and CRP
What will be elevated and what will be normal in the serum with Inflammatory Myopathies?
Elevated = Creatine Kinase and Aldolase Normal = ESR and CRP
Dermatomyositis
Weakness and skin lesions
Weakness with certain skin lesions is what type of inflammatory myopathy?
Dermatomyositis
3 common skin lesions with Dermatomyositis?
- Gottron’s patches
- Heliotrope rash
- V neck Erythema
3 common skin lesions with Dermatomyositis?
- Gottron’s patches
- Heliotrope rash
- V neck erythema
Gottron’s patches
Raised lesions over dorsal hand/fingers
Heliotrope rash
Periorbital edema with purpleish eyelid discoloration
V neck erythema
Poikiloderma = shawl sign
Once Dermatomyositis is diagnosed, what should you start looking for immediately, as the patient is at an increased risk for it?
Occult Malignancy
What will be seen on biopsy with Dermatomyositis?
Perifascicular atrophy
Perimysial and Perivascular inflammation
What will be seen on biopsy with Dermatomyositis?
Perifascicular atrophy
Perimysial and Perivascular inflammation
Polymyositis
Proximal muscle weakness
Only proximal muscle weakness
Polymyositis
What will be seen on biopsy with Polymyositis?
Endomysial inflammation
What will be seen on biopsy with Polymyositis?
Endomysial inflammation
What will be elevated (for sure) with Dermatomyositis and Polymyositis?
Creatine Kinase and Aldolase
What antibody is (+) with Dermatomyositis and Polymyositis?
Anti JO-1
What antibody is (+) with Dermatomyositis and Polymyositis?
Anti JO-1
What is the treatment for Dermatomyositis and Polymyositis?
Glucocorticoids
Inclusion Body Myositis
Finger flexion or Quadriceps weakness
Finger flexion or Quadriceps weakness
Inclusion Body Myositis
Creatine Kinase level with Inclusion Body Myositis?
NORMAL to mild elevation
Creatine Kinase level with Inclusion Body Myositis?
NORMAL to mild elevation
What will be seen on biopsy with Inclusion Body Myositis?
Endomysial Inflammation
RIMMED VACUOLES
Rimmed vacuoles on biopsy are seen with?
Inclusion Body Myositis
What is the treatment for Inclusion Body Myositis?
RESISTANT to treatment!