| nocturnal amblyopia | Night blindness or difficulty in seeing at night. Symptom of vitamin A deficiency. (27 Sep 1997) |
|---|---|
| nocturnal diarrhoea | Diarrhoea that occurs chiefly at night, usually in association with diabetic autonomic neuropathy. (05 Mar 2000) |
| nocturnal dyspnea | Dyspnea occurring at night, several hours after assuming recumbent position. Occurs in heart failure and results from reabsorption of water from dependent areas after removal of effect of gravity, causing hypervolaemia, aggravating left-ventricular failure. (05 Mar 2000) |
| nocturnal enuresis | Urinary incontinence during sleep. Synonym: bed-wetting. (05 Mar 2000) |
| nocturnal epilepsy | An epilepsy syndrome characterised by nocturnal seizures only. (05 Mar 2000) |
| nocturnal myoclonus | Frequently repeated muscular jerks occurring at the moment of dropping off to sleep. (05 Mar 2000) |
| nocturnal periodicity | A circadian rhythm with the periodicity expressed during nighttime hours, as in the night release of microfilariae of the human filaria Wuchereria bancrofti into the peripheral blood; this type of periodicity is found in regions where the vector mosquito is a night-biting species. (05 Mar 2000) |
| nocturnal vertigo | A feeling of falling when dropping off to sleep. (05 Mar 2000) |