I am losing hair at very rapid rate all of a sudden ?why is it

Alopecia: There is a condition called alopecia which causes the hair to fall out. This is different from male pattern baldness which is genetic and not a disorder. A dermatologist can tell you if you have alopecia (an autoimmune disorder) and treat it w/medication. Peace and good health.

Hair loss: The most common cause of sudden hair loss is one of many forms of alopecia. Alopecia is defined as a hair loss disease that affects men, women and children. The onset of hair loss is often sudden, random and frequently recurrent. Other causes Thyroid disease, Medications such as blood thinners and birth control pills, A poor diet or lack of exercise, combined with high levels of stress,infection

Hair loss: It is important to define the pattern of hair loss and weather there is any other medical conditions other factors include hormones and genetic factors. Condition of the scalp itself and hair, and weather other body hair is affected, so medical review is required

Hair loss : Hair loss can be due to various reasons like thyroid problems, low iron , low B12 , stress , fungal infection etc . Good diet and having adequate sleep can be tried . See doctor for examination and tests.