My hair is very thin. My hair is falling out very...

What are the causes of hair thinning and shedding ?
1. Some diseases and medicines that directly or indirectly cause hair loss, such as anemia, thyroid disease or eczema.
2. unhealthy diet 
3. Neglect of hair health: Use of poor quality shampoo or products 
4. some medications side effects
what to do next :
Initially, if you dont have clear hair loss, we advise to use the available treatments before consulting a specialist doctor for a period of 6 weeks, in case there is improvement, continue for another 6 weeks and notice the results, but if there is no improvement, see a dermatologist Either after the first 6 weeks or the second 6 weeks, and in this case you can use the following to improve your hair thinning, which are:
1. take vitamin supplement
2. ue Natural hair oils as weekly hair mask
3. improve your hair care
- A vitamin supplement such as Centrum or Perfectil is a vitamin supplement that contains vitamins necessary for the body in general and for hair and skin in particular in appropriate quantities daily, and 1-2 tablets are taken daily after lunch and it is preferable to take them during the day to improve absorption, and natural oils for hair include Oils such as olive oil, coconut oil and neem oil, and you can use a hair mask after showering 2-3 times a week and keep it on the hair for a period of 4 hours before washing it again, and it works to soften the hair and nourish the scalp, as well as on you Taking care of hair properly, such as avoiding dyes and excessive bleaching, and avoiding washing hair with shampoo that contain sulfa or porparin , and also improve your diet, sleep and exercise.
- in case of hair loss, in this case you must do the following: consult dermatologist and the doctor will prescribe specific hairloss treatments and treat any other medical conditions affecting hair loss, for example, anemia is treated With oral iron and folic acid, hypothyroidism is treated with thyroxine medication, hair eczema is treated with topical cortisone shampoo, and an oral antihistamine may be prescribed 
Besides, minoxidil is prescribed to treat hair loss and hair regrowth, and minoxidil is used for a period of 6 - 12 months to reduce hair loss, and it will be continued in the future if the loss continues.
What tests are needed:
First, a clinical examination by a specialist doctor and a test of the strength of the hair follicle, a blood test (CBC), a thyroid test TSH / T4 / T3, and a check of the level of vitamin D and B12