Approaches Flashcards
Autonomic neuropathy
-> what to assess for next
- Peripheral neuropathy
- Parkinonism/ ataxia
- No associated features (no parkinonism/ataxia/PN)
Autonomic neuropathy + Parkinonism/ Ataxia?
Multi system atrophy: Parkinonism predominant, Cerebellar predominant
Lewy body disorders: Parkinson’s disease, Dementia with Lewy body
autonomic neuropathy + distal painful peripheral neuropathy?
think of
- Vasculitis
- HIV
- Fabry Disease
- Diabetes
- Amyloidosis
- Hereditary
Autonomic neuropathy + distal sensorimotor peripheral neuropathy?
Diabetes, Amyloidosis
Autonomic neuropathy + subacute sensory peripheral neuropathy?
Sjogren’s syndrome
Paraneoplastic
Erythema nodosum: different groups of causes?
Infections
Malignancy
Autoimmune disease
Granulomatous disease
IBD
Drugs
Pregnancy
Erythema nodosum: malignancy causes?
Lymphoma
Leukaemia
Internal carcinomas
Sweet’s Syndrome
Erythema nodosum: infective causes
Bacterial: streptococcal, TB, leprosy, GE (Salmonella, campylobacter, Yersinia), Leptospirosis, Chlamydia trachomatis, Lymphogranuloma venereum, Whipple’s disease
Fungal: Coccidiomycosis, Histoplasmosis, Blastomycosis
Viral: Infectious mononucleosis, Hepatitis B
Erythema nodosum: Autoimmune disease cause
Behcet’s disease
Erythema nodosum: Granulomatous disease cause
Sarcoidosis
Erythema nodosum: IBD causes
Crohns, UC
Drug causes of erythema nodosum?
COCP
Penicillins
Sulfonamides (e.g bactrim)
Bromides and iodides
TNFa inhibitors (rare)
Causes of Gout?
Obesity
Drug/Dietary:
- Ethanol
- excessive purine ingestion
- B12 deficiency
- Cytotoxic drugs
Malignancies with high cell turnover
Skin disorders: psoriasis, eczema
Haematological disorders:
myeloproliferative
lymphoproliferative disorders
haemolytic anaemia
renal failure with reduced excretion
Hypertension: main groups of causes
Renal cause
Endocrine cause
Neurological
Vascular
Drugs
Pregnancy
Renal causes of hypertension? what features may be suggestive
jump in Cr after ACEi/ARB
Flash pulmonary oedema
Renal bruit
haematuria
Renal causes of hypertension? causes
Renal artery stenosis: assoc Takayasu’s arteritis, Neurofibromatosis
Polycystic Kidney disase: assoc Berry aneurysms, Regurgitant murmurs
Glomerulonephritis: Recurrent UTI, Hep B/C/HIV, Autoimmune, myeloma
Renal cell carcinoma (EPO producing): assoc polycythaemia
Endocrine causes of Hypertension?
features
may have clear physical signs associated with underlying disorder
electrolyte abnormalities
episodic HTN
endocrine causes of hypertension?
causes
Conn’s syndrome: hypokalaemic (may be normoK) metabolic alkalosis
Cushing’s syndrome: Lung ca, ectopic, glucocorticoid/TCM use
Acromegaly: DM, CTS, Acanthosis nigricans, osteoporosis, hemianopia, GI bleed
Phaeochromocytoma: MEN, Paroxysmal
Hyper/hypothyroidism
Hyperparathyroidism: MEN syndrome, hyperCa, osteoporosis
pregnancy related cause of hypertension
pre eclampsia
- frothy urine, blurring of vision, HTN, seizures
drug causes of hypertension
OCPs
steroids
recreational drugs
neurological causes of hypertension?
Raised ICP
obstructive sleep apnoea: hypoxia, polycythaemia, metabolic disorders
vascular causes of hypertension
Coarctation of aorta: asymmetrical clubbing, differential clubbing, pulse delays
Arteritis: Takayasu’s arteritis- vascular claudication, Scleroderma
generic groups of causes of mononeuritis multiplex
infections
rheumatological
chronic disease
haematologic
malignancy
metabolic
malignancy related causes of mononeuritis multiplex
paraneoplastic
carcinoid
tumour invasion
haematologic causes of mononeuritis multiplex
hypereosinophilia
cryoglobulinaemia
hypereosinophilia
idiopathic thrombocytopenic purpura
endocrine cause of mononeuritis multiplex
B12 deficiency
chronic diseases causing mononeuritis multiplex
diabetes mellitus
hypertension
acromegaly
amyloidosis
sarcoidosis
infectious causes of mononeuritis multiplex
leprosy
lyme disease
hep B/C/ HIV
rheumatological causes of mononeuritis multiplex
vasculitis:
GPA, eGPA, polyarteritis nodosa, Behcet’s disease, giant cell arteritis, HSP
connective tissue diseases:
sjogrens, SLE, RA, systemic sclerosis
congenital causes of primary hypogonadism?
Klinefelter’s syndrome XXY
Mutation in LH/FSH receptor genes
Cryptorchidism
Disorders of androgen synthesis
Myotonic dystrophy
Acquired causes of primary hypogonadism?
infections- mumps
radiation
drugs: ketoconazole, suramin, alkylating agents
toxins
trauma
torsion
autoimmune
systemic illnesses: cirrhosis, chronic renal failure, AIDS
causes of pseudogout
haemochromatosis
hyperPTH
hypoMg
hypophosphatasia: rare genetic mutation in ALP -> development of osteomalacia and periodontal disease
causes of hypomagnasaemia?
GI loss
diarrhoea
malabsorption
small bowel bypass surgery
medications: PPIs
Renal Loss
volume expansion
uncontrolled DM
Alcohol
hyperCa
acquired tubular dysfunction: recovery from ATN, post obstructive diuresis, post kidney transplantation
Genetic disorders: Bartter, Gitelmans, HNF1b mutation
medications: diuretics, antibiotics (e.g. aminoglycosides), calcineurin inhibitors, cisplatin, EGFR antibodies
what are some secondary causes of haemochromatosis?
increased intake:
transfusion overload
iron loaded diet
Hemin infusions (used to treat porphyric attacks)
increased absorption:
thalassaemia major/intermedia
sideroblastic anaemia- congenital or acquired
chronic liver disease: alcoholic, chronic hepatitis, NAFLD
Causes of sideroblastic anaemia?
Congenital
Acquired:
- Clonal/neoplastic: myelodysplasia
- Metabolic: Zinc toxicity, Cu deficiency, Alcohol, Drugs e.g. isoniazid, chloramphenicol, linezolid
Causes of group 1 hypertension ie. Pulmonary arterial hypertension?
- Idiopathic
- Hereditary variant
- Drug and toxin induced: e.g. appetite suppressants, amphetamines, cocaine, interferon
- Connective tissue disease
- Congenital heart disease
- HIV
- Schistosomiasis
- portopulmonary hypertension
Causes of group 2 pulmonary hypertension?
secondary to left heart disease:
HFpEF, HFrEF
Valvular heart disease
Congenital/ acquired cardiac conditions
Causes of group 3 pulmonary hypertension?
due to lung diseaase and or hypoxia:
obstructive lung disease
restrictive lung disease
mixed disease
hypoxia without lung disease
developmental lung disorders
causes of group 4 pulmonary hypertension?
due to pulmonary artery obstruction:
chronic thromboembolic pulmonary hypertension
pulmonary artery obstructions
causes of group 5 pulmonary hypertension?
unclear/ multifactorial:
-haematological disorders
- systemic and metabolic disorders
- complex congenital heart disease
Causes of pyoderma gangrenosum?
inflammatory bowel disease
inflammatory arthritis: e.g. RA
solid organ malignant neoplasms
DM
haematological disorders
Sarcoidosis
Autoimmune/ viral hepatitis
inflammatory arthritis causing pyoderma gangrenosum?
RA
Ank Spond
SLE
haematological disorders that can cause pyoderma gangrenosum?
MGUS
Myelodysplastic syndrome
Polycythaemia vera
Haematological Malignancy
Causes of secondary osteoarthritis
Mechanical
Inflammatory
Metabolic
Inflammatory causes of secondary osteoarthritis?
Crystal arthropathy
RA
post septic arthritis
Spondyloarthropathies
Causes of thrombosis?
Inherited
Acquired: immobility, prothrombotic state, endothelial dysfunction
Inherited causes of thrombosis?
Factor V Leiden mutation
Protein C/S deficiency
Anti thrombin III deficiency
Prothrombin mutation
Acquired causes of thrombosis?
Immobility: post surgery, pregnancy
Endothelial dysfunction: recent surgery, trauma, venous catheter
Prothrombotic state:
Malignancy, Myeloproliferative neoplasm
Antiphospholipid syndrome
Nephrotic syndrome
IBD
Congenital heart disease
Paroxysmal nocturnal haemoglobinuria
Medications: COCP, hormone replacement therapy; antifibrinolytic, anabolic
Causes of intention tremor?
Cerebellar disease
Multiple sclerosis
Midbrain stroke/ trauma
Causes of resting tremors?
Parkinson’s disease
Parkinsonian syndromes
Rubral tremors: midbrain, thalamic, cerebellar or pontine injury
Wilson’s disease
Severe essential tremors
Causes of postural- action tremors?
Physiological tremors
Essential tremors
Task- specific tremors
Extrapyramidal disorders: PD, wilsons, dystonia
Cerebellar disease
Neuropathic tremors (muscle weakness and loss of proprioception): CIDP, hereditary neuropathies
Focal lesions causing splenomegaly?
Haematoma
Cyst
Primary vascular tumour
Haemangiomas
Hamartomas
Infiltrative causes of splenomegaly?
Sarcoidosis
Amyloidosis
Gaucher’s disease
Tumour metastasis
SLE
HLH
Autoimmune cytopenias causing splenomegaly?
AIHA
ITP
Immune neutropenia
Feltys syndrome
Haematological malignancy causing splenomegaly ?
Lymphoma
Leukaemia
Myelofibrosis
PCV
Infections causing splenomegaly?
Malaria
Visceral leishmaniasis
TB
EBV, HIV
Leptospirosis, Schistosomiasis
Liver disease causing splenomegaly?
Liver cirrhosis with portal hypertension
Extramedullary haemopoiesis causing splenomegaly?
Transfusion dependent thalassaemia
Primary / secondary myelofibrosis
Causes of secondary myelofibrosis?
Neoplasia
Infection: TB, fungal infections, HIV
Metabolic: Gaucher disease
Haematological malignancies: CML, Myeloma, lymphoma, AML
Radiation
Sarcoidosis
Causes of raised CK?
Inflammatory myopathy
Infectious myopathy
Dystrophinopathies
Rhabdomyolysis
Drugs
Metabolic myopathies: carbohydrate/ lipid/ purine metabolism
Endocrine myopathies
Malignant hyperthermia
Motor neuron disease: ALS, spinal muscular atrophy
Periodic paralysis
Inflammatory myopathies causing raised CK?
Dermatomyositis
Polymyositis
Inclusion body myositis
Behcets
Sarcoidosis
Dystrophinopathies causing raised CK?
Beckers
Duchennes
Fascio scapulo humeral
Limb girdle
Myotonic dystrophy
Drug causes of raised CK?
Colchicine
Statin
Anti malarials
Alcohol
Penicillamine
Endocrine myopathies causing raised CK?
Acromegaly
Hypothyroidism
Causes of palpitations?
Cardiac
High output states
Metabolic and endocrine
Catecholamine excess: stress, exercise
Substance use: cocaine, amphetamines, caffeine, alcohol, nicotine
Drugs
Psychiatric disorders
Cardiac causes of palpitations
Arrhythmias
Valvular heart disease
Shunt
High output states causing palpitations?
Anaemia
Pregnancy
Fever
Pagets disease of the bone
Metabolic/ endocrine causes of palpitations?
Hypoglycaemia
Hyperthyroid
Phaeochromocytoma
Psychiatric disorders causing palpitations?
Generalised anxiety
Panic disorder
Somatization disorder
Drug causes of palpitations
Vasodilators
Anticholinergics
Sympathomimetic agents
Beta blocker withdrawal
Causes of hyperpigmentation on examination?
Iron overload: haemochromatosis, haemosiderosis
Endocrine: addisons, cushings
Metabolic: renal failure, porphyria
Liver: PBC
Drugs: amiodarone, minocycline
Physiological- sun tanning
Causes of macrocytosis?
B12/ folate deficiency
Drugs: methotrexate, azathioprine, hydroxyurea
Shift to immature red cells:
Reticulocytosis
Primary bone marrow disorders:
Myelodysplastic syndrome
Lipid abnormalities:
Liver disease, hypothyroidism
Alcohol abuse
Multiple myeloma
Causes of microcytic anaemia?
Hereditary: thalassaemia
Acquired:
Iron deficiency
Anaemia of chronic disease
Anaemia of inflammation
Myelodysplastic syndrome with acquired thalassaemia
Zinc toxicity
Cu deficiency
Sideroblastic anaemia
Causes of sideroblastic anaemia?
Toxins: lead, alcohol
Drugs: isoniazid, chloramphenicol, linezolid
Causes of polyuria?
Primary polydipsia
Solute diuresis: diuretics, hyperglycaemia, mannitol, SGLT2i
Diabetes insipidus
Causes of cranial Diabetes insipidus?
Idiopathic
Post neurosurgery
Traumatic
Tumour
Hypoxic injury
Infiltrative diseases
Causes of nephrogenic diabetes insipidus?
Hereditary
Lithium
HyperCa
HypoK
Renal causes: ADPKD, amyloidosis, medullary cystic kidney disease, post obstructive/ ATN diuresis
Malignant causes of monoarthritis?
Tenosynovial giant cell tumour
Chondrosarcoma
Osteoid osteoma
Metastatic disease
Causes of weight gain?
- Fat
- Big tumour
- Fetus
- Fluid: cardiac, renal, liver, low albumin (malnutrition, chronic disease, protein losing enteropathy), capillary leak syndromes
Cause of weight gain from fat ?
Neuroendocrine causes
Cushings
PCOS
Hypothyroid
Hypothalamic dysfunction
Hypogonadism
GH deficiency
Iatrogenic
Drugs: corticosteroids, antipsychotics, antidepressants, insulin, AEDs
Hypothalamic surgery
Physiological:
Sedentary lifestyles
Social and behavioural
Infectious / post infectious causes of polyarthritis?
Viral infection
Bacterial infection: Lyme disease, bacterial endocarditis
Rheumatic fever
Reactive arthritis
Metabolic causes of secondary osteoarthritis
Haemochromatosis
Acromegaly
Ochronosis: alkaptonuria, quinine/ hydroquinone use
Mechanical causes of secondary osteoarthritis
Previous trauma
Valgus/ varus deformity
Occupation related
Developmental
Meniscectomy
Leg length discrepancy
Hyper mobility syndrome
Neuropathic arthropathy
Causes of painless haematuria?
Renal: dystrophic RBCs
GN, PCKD
Urological cause: isomorphic
Exercise
Trauma
Post radiation: radiation cystitis
Bladder cancer
Drugs: cyclophosphamide, anti platelets/ anticoag