Haematological | Anaemia |
Polycythaemia vera | |
Obstruction to venous drainage | Cerebral venous sinus thrombosis |
Jugular vein thrombosis/ligation | |
Superior vena cava syndrome | |
Increased right heart pressure | |
Arteriovenous fistulas | |
Infection/subarachnoid haemorrhage causing decreased CSF absorption | |
Medications | Fluoroquinolones |
Tetracycline class antibiotics | |
Corticosteroid withdrawal | |
Danazol | |
Vitamin A derivates | |
Levothyroxine | |
Nalidixic acid | |
Tamoxifen | |
Ciclosporin | |
Levonorgestrel implant | |
Lithium | |
Growth hormone | |
Indomethacin | |
Cimetidine | |
Systemic disorders | Chronic kidney disease/renal failure |
Obstructive sleep apnoea syndrome | |
Chronic obstructive pulmonary disease | |
Systemic lupus erythematosus | |
Psittacosis | |
Endocrine | Addison ‘s disease |
Adrenal insufficiency | |
Cushing ‘s syndrome | |
Hypoparathyroidism | |
Hypothyroidism | |
Hyperthyroidism | |
Syndromic | Down syndrome |
Craniosynostosis | |
Turner syndrome |