Hi. I guess you may be having a sinusitis
, which can cause such symptoms of headache, sore throat
, and light headedness. The other problem which can cause similar symptoms except for the sore throat is sleep apnea/ snoring
, which may cause a disturbed sleep pattern which can cause all other problems which you have. Both these conditions can also affect your work performance and concentration. So visit an ENT specialist
for the same. Hope I have answered your query. Thank you.