Harmattan wind is known as the Doctor wind. It is a dry, dusty, north-easterly or easterly wind that blows in West Africa north of the equator. The Harmattan wind blows from the Sahara Desert over West Africa into the Gulf of Guinea. It is called Doctor Wind because its dryness kills pests and germs.
The Harmattan wind brings desert-like weather conditions. It lowers the humidity, dissipates cloud cover, and prevents rainfall formation. It can also create big clouds of dust which can result in dust storms or sandstorms. The Harmattan wind can have health effects on people, including Dryness of the skin; Dried or chapped lips; Eyes; Respiratory problems.
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