RESUMO
At the bedside it was noted that, after ocular fundoscopy, patients with migraine complained more often of an after-image than did non-migraineurs. This phenomenon was then investigated in consecutive patients attending a general neurology outpatient clinic. The relative risk for the diagnosis of migraine in patients reporting an after-image was 2.91 (95% confidence interval 1.96 to 4.34), and the sensitivity, specificity and positive predictive value of this observation for the diagnosis of migraine were 0.63, 0.75 and 0.55 respectively. After-images were equally likely to be reported by migraineurs with and without aura, and by patients with migraine equivalents. The after-image phenomenon probably reflects the heightened sensitivity to visual stimuli of patients with migraine. Although a diagnosis of migraine is primarily established by the patient's history, the presence of an after-image following ocular fundoscopy may support this diagnosis.
Assuntos
Pós-Imagem , Transtornos de Enxaqueca/diagnóstico , Oftalmoscopia , Adolescente , Adulto , Idoso , Criança , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Transtornos de Enxaqueca/psicologia , Valor Preditivo dos Testes , Sensibilidade e EspecificidadeRESUMO
A patient who developed pure alexia without agraphia following a stroke is described. An infarction of the left occipital pole was demonstrated by Magnetic Resonance Imaging (MRI). The literature on this rare syndrome is reviewed, and the localisation of damage in relation to the clinical findings discussed.
Assuntos
Infarto Cerebral/complicações , Dislexia Adquirida/etiologia , Agrafia , Infarto Cerebral/patologia , Dislexia Adquirida/patologia , Humanos , Imageamento por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , Lobo Occipital/patologiaAssuntos
3,4-Metilenodioxianfetamina/análogos & derivados , Transtornos Cerebrovasculares/induzido quimicamente , Drogas Desenhadas , Transtornos Relacionados ao Uso de Substâncias/complicações , 3,4-Metilenodioxianfetamina/efeitos adversos , Adolescente , Adulto , Drogas Desenhadas/efeitos adversos , Humanos , N-Metil-3,4-MetilenodioxianfetaminaRESUMO
A patient with chronic inflammatory demyelinating polyneuropathy (CIDP) and central demyelinating disease is described in whom striking nodular filling defects on multiple lumbar-sacral nerve roots, mimicking neurofibromata, were observed at myelography and magnetic resonance imaging. We suggest that these lesions are secondary to recurrent segmental demyelination and remyelination and that the differential diagnosis of this radiological feature should include CIDP.