The combination of heat and humidity is likely to give Nigerians a cause to worry this year, the Nigerian Meteorological Agency (NiMet) has predicted.

NiMet said on Monday that many Nigerians would likely experience "above danger heat stress".

In its 2017 Seasonal Rainfall Prediction, the agency said that continuous exposure to heat for long hours could cause heat stress which may in turn lead to several illnesses collectively called "hyperthermia".

The agency warned that older people could have a tough time dealing with heat and humidity.

NiMet highlighted some of the heat related complications to include heat syncope, heat cramps, heat edema, heat exhaustion and heat stroke.

According to the agency, heat syncope is a sudden dizziness that could happen when one is active outdoors in hot weather.

"Heat cramps are the painful tightening of muscles in your stomach, arms or legs which can result from hard work.

"Heat exhaustion is a warning that your body can no longer keep itself cool as people might feel thirsty, dizzy, weak, uncoordinated and nauseated accompanied by lots of sweating. “Heat exhaustion can progress to heat stroke where people need to get medical help right away.

"Older people and people who become dehydrated or those with chronic diseases or alcoholism are at most risk," NiMet warned.

Some signs of heat stress are dizziness, headache, sweaty skin, weakness, cramp, nausea, vomiting and fast heart beat.

Others symptoms include: high temperature,  confusion, convulsion and fainting.

To prevent heat related illness and fatalities, the United States Department of Labor suggests that individuals should drink water every 15 minutes (even if you are not thirsty), if you work outdoor, rest in the shade, wear a hat and light-colored clothing, learn the signs of heat illness and what to do in an emergency.

Now you know!