Yes. Staring at the computer for a long period of time without adequate breaks puts a strain on your eyes which, can in turn, cause a headache. Hot or not, this is likely to happen. You should take ample breaks during computer use.

There could be many reasons for a headache and I will list some here. When you have the correct cause and remedy, of course, you will find your headache is gone. Radiation could be part of the factor. The sun, TV, computers, etc. emit radiation. There are various "forms" of radiation. Even many computer cables have an attached device to the cable to prevent the radiation from reflecting itself on another cable. It has been proven many times that radiation (electrical waves and otherwise) can affect and alter chemicals (especially toxins and metals) which are in the body. Radiation accumulates in the body and, of couse, is not good for a body. Many studies have been done on this and the statement is not conjecture. There are "filter screens" and such to assist in eliminating some of the exposure. There are "shields" which can be put on the computer screen which block harmful radiation emitted (Cathode-Ray Tube). [On a CRT, a beam is shot directly at your face, hits a screen on its way.] Different electronic equipment can produce various types of radiation. You probably notice the radiation from various electronics when you try to talk on a phone while close to certain electronic equipment. Try to have a wireless phone conversation a foot away from your computer screen...you will get static. There are amendments which can be done to reduce exposure to radiation and if this works to stop the somatics, then you know what the cause is. There is some information at this website which purports even LCD as emitting radiation: http://www.biof.com/safetech.html There are some health programs out there to help a person rid himself of the accumulated radiation using the B vitamin Niacin to flush out the radiation. Pretty amazing...I have seen people turn on sunburns from 20 years prior showing their tan lines at that time. These programs are monitored with proper proportions of balancing vitamins and regimens. Niacin can restimulate cancer if just done briefly with an inappropriate follow-thru. Of course, there could be many factors which elicit a headache, and a hot room surely could. Poor ventilation or oxygen supply will give anyone a headache. Everything from inadequate salt/potassium balanced content in your body, to the restimulation of unpleasant conditions of the past, to phenomena regarding study or the absence of mass when reading a lot significance, to fixed attention on a set distance for an extended period of time, can cause headaches. You are in a hot room. You may want to just try a little potassium supplement from the grocery store. It balances the salt (sodium) content. When people sweat, they loose their salts and need to replace them. Headaches commonly occur when the salt content is out-of-whack. Working outside here in Texas, I try to take some sea salt and potassium gluconate after/during a lot of heavy sweating. It also keeps one from becoming too "exhausted". Try heavy sweating with and without -- you will certainly notice the difference. Headaches can be spawned by a huge variety of different things. By trying different remedies, you will know when you get the correct one because the symptom will be gone. Ha! ...and Bob just loves to squash every answer I have...that is kind of weird...Ha! However, a report in the prestigious medical journal The Lancet, considered to be the most comprehensive and well-referenced report on this topic to date, warns that the dangers of cell phones can NOT be dismissed. Specifically, these studies suggest that using cell phones can lead to problems such as: • Headache • Sleep disruption • Neuroepithelial (tissue in the brain) tumors • Alzheimer's Disease • Parkinson's Disease • Altered memory function, concentration and spatial awareness • Other forms of cancer Contrary to popular belief, research conducted by British consumer research magazine Which? has shown that hands-free cell phone kits can significantly INCREASE your brain's exposure to radiation. A ferrite bead is simply a hollow bead or cylinder made of ferrite, which is a semi-magnetic substance made from iron oxide (rust) alloyed with other metals. It is most commonly used with computer cables, where it is slipped over the cable while the cable is being made, or snapped around the cable in two pieces after the cable is made. In a typical computer system, found in a home or office, you will see these "bumps" on the mouse, keyboard and monitor cables. Ferrite beads work by reducing the RFI (radio-frequency interference) created by these cables. Without the beads, these cables can act as nice, long antennae for the signals they carry. The signals they broadcast can interfere with radios and TVs, causing the sound and/or picture to go fuzzy. The cables can also receive signals and transmit them into the computer, where they cause problems. A ferrite bead eliminates these "broadcast signals." Essentially, it "chokes off" the RFI transmission at that point on the cable -- this is why you find the beads at the ends of the cables. A good reference is the engineering magazine: Compliance Engineering. http://www.ce-mag.com/archive/02/11/may.html One scary statistic: 70-80 percent of the energy emitted from the antenna of a mobile phone is absorbed in the head, according to a University of Washington scientist. The British-based National Radiological Protection Board has some very interesting studies on exposure to household electronics. But you can find out for yourself through research and observation and determine what is true for you. Don't just rely on an "authority".

Headaches can be caused eyestrain . When television (CRT TUBES) first came out they emitted hundreds of times the radiation that a modern CRT emitts. The radiation from a computer screen is very... low . I have used it to design and demonstrate physics principles. Their are wire- mesh screens that will block the radiation. They are commonly sold at computer stores. Distance from the CRT is also very effective in reducing exposure. My guess...eyes..stress...eyestrain Hey, but what do I know