Dermatologist Anna Grigoryeva listed the main problems that can provoke hair loss.
The expert notes that hair loss is a natural physiological process , but it is extremely important to understand how much hair your body loses daily and whether the loss has gone beyond the norm.
⠀
“Normally, a person loses about 100 hairs a day, it is almost imperceptible. If there is significantly more hair left on the pillow or comb, then you should think about it, perhaps there is a problem that the hair is signaling to you, ”the specialist says.⠀
There are many factors that can start the process of falling out. Sometimes this is seasonal, for example, we, like everything in nature, are intensively updated and shed excess in the fall or spring. But if the process of hair loss has dragged on, then you should think about it and look for a different reason.
Often such a cause is stress or nervous shock as a result of jumps in the hormone cortisol. ⠀ It gives our body a command: “Survive!”, And in such conditions, it’s not up to saving hair.
Acute vitamin and mineral deficiencies can lead to hair loss. For a full-fledged life, the body needs not only proteins, fats and carbohydrates, but also vitamin D, iron, magnesium, zinc and copper.
⠀
If you have a long illness and taking antibiotics or hormonal drugs, this can also become soil for alopecia, as well as disorders in the endocrine system as a whole.
Increased levels of prolactin, lack of sex hormones, malfunctions of the adrenal glands – these factors also contribute to parting with beautiful hair.
⠀
Sometimes the problem is local. Hair loss can be the result of inflammation of the scalp. There are many options: seborrhea, dermatitis, psoriasis, fungal diseases. 
Anna Grigorieva Beauty Dermatologist, cosmetologist, trichologist