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No it's an adjective.
There is no adverb for sleepiness (tiredness). But there is an adverb for sleep, which is sleepily.
karolinska sleepiness scale
Melatonin is a natural hormone that regulates sleep-wake cycles and is often associated with triggering sleepiness. It is produced by the pineal gland in the brain in response to darkness, helping to signal the body that it is time to sleep.
Yes, the word 'sleepiness' is a noun, a word for a physical state.
Alzheimer's can cause sleepiness and loss of appetite.
When I'm sleepy, I have sleepiness. When I'm tired, I'm fatigued.
The adverb form of sleepiness is sleepily.An example sentence is: "she sleepily climbed into bed".
The causes of excessive daytime sleepiness include lacking sleep during the night and also some illnesses or their treatment. If someone is having chemotherapy this can cause sleepiness. Also if someone is not eating enough and they are starving this can cause sleepiness.
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Symptoms associated with obesity can include:Difficulty sleepingSnoringSleep apneaPain in your back or jointsExcessive sweatingAlways feeling hotRashes or infection in folds of your skinFeeling out of breath with minor exertionDaytime sleepiness or fatigueDepression