no
yes
yes
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.
Ethanol- Depressant (Alcohol)
Could be narcolepsy.
Nuvigil or Armodafinil is used to treat excessive sleepiness. It's a controlled substance with possible abuse potential, but it causes wakefulness, not sleepiness as narcotics do.
The short answer is, it increases melatonin production which causes sleepiness.
Tryptophan
Long-term or chronic insomnia lasts more than three weeks and increases the risk for injuries during daytime activities because of sleepiness. Chronic insomnia can also lead to mood disorders like depression.
Yes, Chronic sinus can cause sleppiness at mid after noon. Especially If you have Sphenoid sinus infection, then you will get sleepiness at afternoon and tiredness.
When you need to sleep, it is often referred to as "sleepiness" or "fatigue." This state can occur when the body has not received enough rest, leading to a desire for sleep to restore energy levels and cognitive function. Chronic sleepiness may indicate sleep disorders or inadequate sleep hygiene.