Information and opinions on health from danf at HealthCentral.com. HealthCentral.com is one of the top health destinations on the Web, with more than 35 condition-specific, wellness and general health Web properties. http://www.healthcentral.com/profiles/c/7497/index http://www.healthcentral.com/profiles/c/7497/rss self application/xml en-us 15 120 19 http://www.healthcentral.com/images/hc_logo_sm.gif http://www.healthcentral.com/profiles/c/7497/index http://www.healthcentral.com/sleep-disorders/c/7497/11039/midday Wed, 04 Jul 2007 11:00:00 -0400 danf I am getting very tired everyday at about 2pm - 3pm.  It comes on very suddenly. When it happens I need to sleep right now!  After a half hour nap I am fine. I do have sleep apnea, however I think that I am getting a full night sleep.  I do use a cpap machine and it works quite well.  I began having this trouble right after I have the right side of my thiroid removed.  At that point I thought that it might be an after effect from the... http://www.healthcentral.com/sleep-disorders/c/7497/11039/midday