Dear Nishi...
Causes of hair loss/thinning of hair are:
1. Environmental factors
2. Stress
3. Deficiency of certain minerals, vitamins & amino acids in diet. e.g. Iron, zinc, Vit B complex, lysine.
4.
Hormonal factors. e.g.
Thyroxine
5. Any incidence of surgery, shock, etc.
Management includes:
1. Treating the underlying cause
2. Avoidance of stress
3. Dietary modifications
4.
Minoxidil solution to be applied locally to stimulate the hair follicles
5.
Multivitamin & multi mineral supplementation
Minoxidil is quite safe to use having minimal side effects, which wean off with time.
But these medications have to be used regularly under the guidance of a
Dermatologist...as hair loss tends to return on stoppage of these medications.
There is nothing to worry.
Wishing you a Good Health. Let me know if I need to clarify further.
Thanks & take care.