Africa is the most tropical of all continents. Climate and vegetation range from equatorial rainforests, tropical deserts and savanna grassland to Mediterranean. The Sahara Desert, the largest of its kind anywhere in the world, is over 10.4 million km2 n North to south is approx.1800 kms and east-west is 5600km.frica is the most tropical of all continents. Climate and vegetation range from equatorial rainforests, tropical deserts and savanna grassland to Mediterranean. The Sahara Desert, the largest of its kind anywhere in the world, is over 10.4 million km2 n North to south is approx. 1800 kms and east-west is 5600km.
Uncontrollable shaking occurs when the muscles relax and contract repeatedly. Most people experience uncontrollable shaking at some time, usually because of fear or excitement, but a number of neurological diseases that destroy nerve tissue can also cause uncontrollable shaking. These include Parkinson's disease and multiple sclerosis.
Functional tremor is the commonest type of functional movement disorder. In functional tremor there is uncontrollable shaking of part of the body usually an arm or a leg.This is due to the nervous system not working properly but not due to an underlying neurological disease.Functional tremor is sometimes mistaken for Parkinsons disease or other causes of tremor such as 'Essential tremor'. tremor is a rhythmical movement of an arm, leg or other body part such as the head. Functional tremor may come and go through the day. The tremor may become violent at times and change in speed.