A sneeze is a semi-autonomous, convulsive expulsion of air from the nose and mouth. This air can reach speeds of 70 m/s (252 km/h or 157.7 mph). Sneezes spread disease by producing infectious droplets that are 0.5 to 5 ??m in diameter. About 40,000 such droplets can be produced by a single sneeze. Moreover, it is difficult for one to sneeze with one’s eyes open.
Quote from Wikipedia.

A headache (cephalalgia in medical terminology) is a condition of pain in the head; sometimes neck or upper back pain may also be interpreted as a headache. It ranks amongst the most common local pain complaints.

The vast majority of headaches are benign and self-limiting. Common causes are tension, migraine, eye strain, dehydration, low blood sugar, and sinusitis. Much rarer are headaches due to life-threatening conditions such as meningitis, encephalitis, cerebral aneurysms, and brain tumors. When the headache occurs in conjunction with a head injury the cause is usually quite evident.

Treatment of uncomplicated headache is usually symptomatic with over-the-counter painkillers such as aspirin, paracetamol (acetaminophen) or ibuprofen, although some specific forms of headaches (e.g., migraines) may demand other, more suitable treatment. It may be possible to relate the occurrence of a headache to other particular triggers (such as stress or particular foods), which can then be avoided.
Quote from Wikipedia.

Good to know more, Wikipedia is just great!
I think my problem is only a normal flu or cold…
But:
….
while(work_on_hand > 0)
{
if(work_done())
{
work_on_hand–;
}
else
{
going_to_dead++;
}
}
sleep_and_rest = true;
return;
….
🙂

Links:
Wikipedia – Sneeze
Wikipeida – Headache