Differential Diagnoses
in General Medicine
(Version 10.2004)
Last updated: 10th October 2004
author:
David Scerri MD MRCP(UK)
Manchester, UK
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palmar erythema
pancreatitis (chronic)
pancytopaenia
papillary necrosis (renal)
papillitis (swollen optic disc)
papilloedema (swollen optic disc)
paradoxical splitting of second heart sound
paraesthesiae
paraplegia or paraparesis
paraspinal calcification
parkinsonism
parotid swelling
pathological fracture
pathological Q waves on ECG (pseudo-infarction pattern)
perianal disease
perianal fistula(s)
pericardial calcification
pericardial effusion
periosteal reaction
peripheral nerve disorders
peripheral neuropathy (classified according to causative pathology)
peripheral neuropathy (classified as axonal or demyelinating forms)
peripheral neuropathy (classified depending on whether primarily motor or sensory)
peripheral vascular disease
pes cavus
phalangeal sclerosis (on hand X-ray)
photophobia
photosensitivity of skin
pitting of nails
pleural effusion
plexopathy
pneumatosis coli
pneumothorax
polyarthritis
polyarthritis, chronic
polycythaemia
polydipsia and polyuria
polyneuropathy
polyuria and polydipsia
portal hypertension
positive Mantoux test
positive rheumatoid factor test
posterior uveitis
postural hypotension
potassium, decreased serum level
potassium, elevated serum level
premature atherosclerosis
priapism
primary amenorrhoea
prolonged bleeding
prolonged QT interval on ECG
proptosis or exophthalmos
protein-losing enteropathy
proteinuria
proximal myopathy
pruritus
pseudogout
pseudo-infarction pattern on ECG (pathological Q waves)
ptosis
pulmonary eosinophilia
pulmonary fibrosis
pulmonary fibrosis with increased lung volume
pulmonary hypertension
pulmonary oligaemia on CXR
pulmonary plethora on CXR
pulmonary stenosis or regurgitation - see valvular heart disease
pulmonary-renal syndromes
pure red cell aplasia
purpura
pyoderma (pyoderma gangrenosum)
pyrexia of unexplained origin
pyridoxine (vitamin B6) deficiency
pyrophosphate arthropathy (pseudogout)