Legal Definition of wage. 1  1 : a payment usually of money for labor or services usually according to a contract and on an hourly, daily, or piecework basis âoften used in plural. 2  2 pl : the share of the national product attributable to labor as a factor in production.
Causes. Sinus headaches can be caused by sinus congestion and inflammation, called sinusitis. Sinusitis, in turn, is caused by either a respiratory infection, such as a cold or flu, or allergies, like hay fever.Healthy sinuses allow mucus to drain and air to circulate throughout the nasal passages.auses. Sinus headaches can be caused by sinus congestion and inflammation, called sinusitis. Sinusitis, in turn, is caused by either a respiratory infection, such as a cold or flu, or allergies, like hay fever.
This increased inflammatory fluid production and the decrease in drainage causes the pain and pressure of a sinus headache. After a period of time bacteria and viruses may travel from the nasal cavities into the stagnant fluid within the sinus cavity and cause an infection. Most sinus infections are due to viruses. Viruses are the more likely cause if symptoms have been present for less than a week and are not getting worse.