1 Coal is a flammable black or brown organic sedimentary rock. Itâs mostly carbon and is typically found as layers (coal beds) or veins (coal seams).  Natural gas is a combustible mix of hydrocarbon gases. Itâs colourless and consists mainly of methane (CH4).
Anemia Anemia, a lack of red blood cells, can cause fatigue, pale skin, weakness, dizziness, headache and more. Mononucleosis Mononucleosis is a viral infection causing extreme fatigue, sore throat, fever, rash, muscle aches, and more.
Other manifestations in hyperkalemic patients may be related to the cause of the hyperkalemia, such as polyuria and polydipsia with uncontrolled diabetes. Severe muscle weakness or paralysis â Hyperkalemia can cause ascending muscle weakness that begins with the legs and progresses to the trunk and arms [4-6].