For the last 5 months, I have been losing hair in bulk suddenly. 3 months ago I moved to Chennai. What to do? (Photo)

You need an examination to understand why you are losing hair before considering treatment options. Homeopathy probably will not grow back hair but it probably will not hurt either.  

Thyroid disease induced hair loss should rectify itself within 3-6 months of correction of the thyroid status. I usually recommend taking Biotin 10mg tablets (various brands available in the market) once daily along with using Saw Palmetto extract lotion  (Tricholanics is a good brand) twice daily on the scalp, for 3 months. These should help. 

Without examining your scalp up close, it's not possible to say the cause of your hair loss.For most women, sudden increased daily shedding is a sign of telogen effluvium. Caused of telogen effluvium include:stressthyroid problems low irondietsmedicationsThe reason it is so important to see your scalp up close is to evaluate for evidence of genetic hair loss. It's possible you have a combination of telogen effluvium and genetic hair loss and both need to be carefully considered.

There is a connection between hair loss and this condition which usually does not reverse when the hormones are not at the correct levels, Speak with your doctor about your treatment, and if you don't have a doctor in the area you just moved to, find one. Hair loss in women is complex. Genetic hair loss runs in families on the woman's side
(mother, sister, grandmothers etc...), but most female hair loss occurs because
of some underlying cause such as birth control pills, some medications that are
used, and a variety of other diseases that shock the hair into miniaturization.
A typical knowledgeable doctor will examine you, determine the distribution of
your hair loss, see if it is uniform or patchy, take a careful history from you
and order a variety of blood tests to include the following. You must see a
good doctor for this assessment:


Sex Hormone tests

SHBG (Sex Hormone
Binding Globulin) used to test status of male hormones

Estradiol is a sex
hormone

FSH (Follicle
Stimulating Hormone) *not hair follicle but follicle in the ovary*

LH (Luteinizing
Hormone) is a sex hormone

Free Testosterone

Total Testosterone

ANA (Anti Nuclear
Antibody) used to test for Lupus or other autoimmune diseases

TSH (Thyroid
Stimulating Hormone) used to test for hyper or hypo-thyroid disease

Test Iron status

TIBC (Total Iron
Binding Capacity)

Ferritin

Iron