Rheumatology Flashcards

1
Q

What are the features of systemic juvenile idiopathic arthritis

A

Still’s disease

Salmon pink rash
Swinging high fevers
Enlarged lymph nodes
Weight loss
Joint inflam and pain
Splenomegaly
Muscle pain
Pleuritis/ pericarditis

Systemic- affects everything

Markers - CRP and ESR, platelets and serum ferritin will be up

No antibodies positive

When fever lasts over 5 days think stills disease or Kawasaki’s

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2
Q

What is a key complication of Systemic JIA

A

Macrophage activation syndrome - massive inflam response

Acute unwell child with DIC
Anaemia, thrombocytopenia
Bleeding and non blanching rash
Life threatening

Key finding: LOW ESR

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3
Q

What are the features of polyarticular JIA

A

Idiopathic inflam arthritis in 5 joints or more

Symmetrical arthritis with minimal systemic symptoms

Mild fever, anaemia and reduced growth but mild compared to systemic

The equivalent of RA in adults

Negative RF as it is seronegative

Can be seropositive (RF positive)- in older/ adolescent kids

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4
Q

What are the features of oligoarticular JIA

A

Involves 4 joint or less
Usually only a single joint- larger joints usually knee or ankle

Girls under 6 usually

Associated with ANTERIOR UVEITIS
Refer to opthalmology

ANA antibodies are positive but inflam markers neg or mildly elevated

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5
Q

What are the features of enthesitis related arthritis

A

Male children over 6
Inflam arthritis and enthesitis
HLA B 27 =gene

Look for signs and symptoms of psoriasis and IBD

Prone to anterior uveitis

Patient will be tender at the entheses

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6
Q

What are the features of juvenile psoriatic arthritis

A

Symmetrical affecting small joints or asymmetrical affecting large joints

Will have
Pllawues of psoriasis
Nail pitting
Onycholysis
Dactlylitis
Enthesitis

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7
Q

What is the management of JIA

A

MDT and paeds rheumatology

NSAIDs
Steroids
DMARDS- methotrexate, sulfasalaizne, leflunomide
Biologics

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8
Q

What are the features of hyper mobile Ehlers- Danlos syndrome?

A

Autosomal dominant

Hypermobile Ehlers-Danlos syndrome - most common and least severe- joint hyper mobility and soft stretchy skin

Joint dislocations
Stretch marks
Easy bruising
Poor wound healing
Bleeding
Chronic pain/ fatigue
Headaches
GORD
IBD
Menorrhagia/dysmenorrhea
Urinary incontinence
Pelvic organ prolapse
Temporomandibular joint dysfunction

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9
Q

What are the features of Classic Ehlers danlos

A

Classical Ehlers-Danlos syndrome - very stretchy skin, smooth and velvety, severe joint hyper mobility, joint pain, abnormal wound healing, lumps over pressure points, hernia, prolapse, mitral regurgitation, aortic root dilation- autosomal dominant

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10
Q

What are the features of vascular ehlers danlos syndrome

A

Vascular Ehlers Danlos syndrome- Most severe- blood vessels prone to rupture, thin translucent skin.
GI perforation, spontaneous pneumothorax. Autosomal dominant

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11
Q

What are the features of kyphoscoliotic ehlers-Danlos syndrome

A

Poor muscle tone as a neonate and infant
Kyphoscoliosis
Joint hypermobility
Joint dislocation is common
Autosomal recessive

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12
Q

What are the features of postural orthostatic tachycardia syndrome (POTS)

A

Can occur with hyper mobile Ehlers-Danlos syndrome

Autonomic dysfunction

Tachycardia, presyncope, syncope, headaches, disorientation, nausea and tremors

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13
Q

What scoring system is used in Ehlers Danlos

A

Beighton score- assess hyper mobility
One point for each side of the body- max score of 9

-Put arms flat on floor with straight legs
-Hyperextend elbows
-Hyperextend knees
-Bend thumb to forearm
-Hyperextend little finger past 90 degrees

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14
Q

What is the management of Hypermobile Ehlers Danlos

A

No cure
Follow up
Physio, OT, psychology

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15
Q

What are the classic features of Henoch Schonlein purpura

A

IgA vasculitis- IgA deposits in blood vessels
Children under 10
Purpuric rash affecting lower limb and bum

Usually triggered by an upper airway infection/ gastroenteritis

4 features
Purpura
Joint pain
Abdo pain (GI haemorrhage, intussception, bowel infarction)
Renal involvement (IgA nephritis- haematuria and proteinuria with some oedema)

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16
Q

How is Henoch Schonlein purpura diagnosed

A

Rule out meningococcal septicaemia and leukaemia

Patient needs to have palpable purpura (not petechiae- bigger)
And at least one of
-Abdo pain
-Arthritis/ arthralgia
-IgA deposits on histology
-Proteinuria/ haematuria

17
Q

What is the management of Henoch Schonlein purpura

A

Supportive
Monitor urine dipstick and BP

Without kidney involvement full recovery in 4-6 weeks
1/3 patients will have reoccurrence in 6 months
Small portion will have end stage renal failure

18
Q

What are the features of Kawasaki disease

A

Systemic medium sized vasculitis
Typically under 5s
More common in boys and asians

Key complication- Coronary artery aneurysm

Features
*Persistent high fever >39 for more than 5 days
*Erythematous maculopapular rash with desquamation on palms and soles (peeling)
*Strawberry tongue
-Cracked lips
-Cervical lymphadenopathy
-Bilateral conjunctivitis

Bloods will show
Low plts and low WBC
LFTS- hypoalbuminaemia and high ALT/AST
ESR raised

19
Q

What is the disease course in Kawasaki disease

A

Acute phase- 1-2 weeks- child most unweel- fever, rash, lymphadenopathy

Subacute phase- 2-4 weeks desquamation and arthralgia- risk of coronary artery aneurysms forming

Convalescent stage- 2-4 weeks- Symptoms settle and aneurysms may regress

20
Q

What is the management of Kawasaki disease

A

High dose aspirin (reduce thrombosis risk)
IV immunoglobulins to reduce coronary artery aneurysm risk

Close follow up with echos

21
Q

What are the features of rheumatic fever

A

Autoimmune condition triggered by strep
Usually group A strep -Strep pyogenes causing tonsillitis

Type 2 hypersensitivity reaction - 2 -4 weeks after infection - immune system attacks own cells

Presentation
Previous tonsillitis
Fever
Joint pain - migratory- different joints at different times
SOB
Rash- erythema marginatum- pink rings or torso and upper limbs
Chorea
Subcutaneous firm painless nodules on extensor surfaces
Carditis- murmurs, pericardial rub, HF, tachycardia/brady

Complications
Recurrence
Mitral stenosis
Chronic HF

22
Q

What investigations are carried out in rheumatic fever

A

Throat swab
Echo, ECG, CXR

ASO antibodies

23
Q

What criteria is used for diagnosing rheumatic fever

A

Jones criteria- Scott Jones has rheumatic fever and gives me the fear

Two major criteria or One major and two minor

Major criteria JONES
-Joint arthritis
-Organ inflam eg. carditis
-Nodules
-Erythema marginatum rash
-Sydenham chorea

Minor criteria - FEAR
-Fever
-ECG changes (prolonged PR) without carditis
-Arthralgia without arthritis
-Raised inflam markers

24
Q

What is the management of rheumatic fever

A

Refer immediately for specialist
-NSAIDs for joint pain
-Aspirin and steroids for carditis
-Propylactic abx (oral/ IM penicillin)
Monitor for complications