It could be that the thyroid medication is interacting with another medication. If you have an overactive thyroid, that too could be resulting in your hair loss.
I have discovered that taking some hormone medication does change your hair texture, but unfortunetely you can not reverse it. If anyone knows differently please let me know.
Hair flat irons should not be used everyday because it will cause a lot of damage to your hair. In the long run it can also cause you to lose hair faster because of all the heat damage it is taking.
not necessarily, but the shampoo does dry your hair out, if you even shampoo your hair every other day the natural oil's from your hair can help condition it and make it softer
does texturizer damage your hair?
Hair bleach
Can putting sharpie on your hair damage it
yes ... dying hair with bleaching kit damage your hair.
Side effects are results of taking a medication that are not the reason you are taking the drug. For example, Rogaine (monoxidil) was originally investigated as a blood pressure medication that was found to cause hair growth. For people taking it for blood pressure, the hair growth would be an (unwanted) side effect. For people taking it to grow hair, a drop in blood pressure (possibly causing dizziness) would be a side effect. Toxic effects are any outcomes of taking a medication that are harmful to the body. Generally, they result from taking a medication at doses above the recommended level. Drug allergy is a hypersensitivity of a particular individual person to a drug that causes an allergic reaction, typically a rash or swelling, when the drug is taken. Penicillin is one of the most common causes of drug allergy. Idiosyncrasy (from Wiktionary) is a peculiar individual reaction to a substance that is harmless to most people.
No it is not going to damage your hair
There are five main hair damage: medical damage photo chemical damage chemical damage thermal damage systemic damage
No! Heredity, hormones, medication, health, hairstyles, hair products used...and the list goes on! A thinner head of hair can result from too tight ponytales or braiding to poor general health or even the type of medication you may be currently taking. There are so many factors contributing and causing thin hair that more information is needed before determining what is actually causing the hair to thin.