Hair loss types & causes 

Hair loss can appear in many different ways, depending on what's causing it. It can come on suddenly or gradually and affect just your scalp or your whole body.

Additional information 

Alopecia areata is an autoimmune condition. An autoimmune condition develops when the immune system mistakes healthy cells for foreign substances. Normally, the immune system defends your body against foreign invaders, such as viruses and bacteria.

  • Chemicals :

    Regular and long-term use of cosmetics, such as shampoos, conditions, serums that are sulphur, ether, and paraben based, damage the hair follicles, thereby provoking hair fall and, later, alopecia if not controlled within time.

  • Mechanical

    Tying the hair tightly for a long time causes the hairline to recede back leading to traction alopecia.

  • Hormonal Factors :

    Alopecia is linked with certain hormonal fluctuations. It has been observed that a few cases of alopecia occur during various stages of life where the hormones have an active role to play. Alopecia areata is found being triggered during puberty, menopause, and after delivery.

  • Trichotillomania :

    It is a psychological disorder where a person is compelled to pull out his/her own hair on the scalp, eyebrows, eyelashes, and on other hairy areas of the body.

  • Fungal Infection :

    Conditions affecting the scalp, such as seborrheic dermatitis and tinea capitis, can also lead to patchy hair loss in the diseased area. This is a reversible condition since hair grows back once the underlying fungal infection affecting the hair follicles is treated.

    • Genetic Factors :

      Many genes have been linked with alopecia areata that participate in the body’s immune response. The genes belonging to HLA (Human leukocyte antigen) are responsible for modifying the immune response and targeting the hair follicles. It is often seen that individuals suffering from this disorder have some other autoimmune disorder unlike alopecia areata running in their families.

    • Associated Disease Condition :

      Individuals suffering from other autoimmune skin diseases, such as psoriasis, atopic dermatitis (eczema), and lichen planus, are prone to develop alopecia areata. For instance, a person having psoriasis of the scalp has scaling, itchy skin which leads to a hair loss, thereby causing bald patches in the affected area. A similar presentation is seen in the other two skin disorders. When baldness occurs as a result of these underlying conditions, this type of alopecia areata is called as scarred alopecia. In this particular condition, the hair does not grow back due to a permanent scar formation over the hair follicles. This scar destroys the hair follicles thereby causing permanent balding in that area.