Alopecia is a condition in which hair is damaged or lost from some or all areas of the body, usually from the scalp. Because it causes bald spots on the scalp, especially in the first stages, it is sometimes called spot baldness. Types of Alopecia There are two main types of alopecia Alopecia areata occurs when the body’s immune system attacks the hair follicles and causes hair fall. Androgenic alopecia, on the other hand, is an inherited form of hair loss. In androgenic alopecia, the hairs on the head grow out and fall out. In men, it is called male pattern hair loss, in women; This woman is called diffuse hair loss. In 1% or 2% of cases, the condition may spread to the entire skull (Alopecia totalis) or the entire epidermis (Alopecia Universalis). Although many people with alopecia areata get only a few bare patches, some people may lose more hair. In cases of alopecia areata Universalis, eyelid and eyebrow damage, as well as hair in the nose and ears, can make a person more susceptible to dust, germs, and foreign particles entering the eyes, nose, and ears.