Have Been Having An Intense Feeling Of Fatigue After Of

Have been having an intense feeling of fatigue after of what i thought was insomnia. After many doctor visits, i was diagnosed with sleep apnea. I received a CPAP but after 3-4 weeks, symptoms still persist the same or worse. Blood tests turn out fine and have gotten a head MRI w/o contrast with a neck ultrasound of blood vessels which turned out fine. Also experiencing head pressure, dizziness, vision trails, heavy eyes, and cold sweats at night and generally feel out of it all day.