Dear Alliana,
Thank you for choosing HCM for your query. I will gladly help you.
It seems like you have 2 brown marks on your neck and you are worried it may be diabetes.
There is a condition called acanthois nigricans which you are probably worried due to the brown spots. It occurs with
pre-diabetes, type 2 diabetes and people who have
insulin resistance like who are
overweight and also in other conditions.
Mostly it develops around the neck, axillary areas (under-arms) and other skin folds and creases.
The skin folds becomes dark- brownish, thickened and velvety which is usually poorly defined and this
hyperpigmentation of the skin usually develops over a period of time.
You can look at the images of
acanthosis nigricans over the internet and can compare it with yours.
It seems like with you there are two separate brown marks on your neck, which does not specifically fit with acanthosis nigricans.
I would suggest to be on the safer side and to be sure, you should have it examined by a physician or a
dermatologist even if it is not acanthosis, especially since you mentioned that it has suddenly appeared and if needed they may order tests based on their finding.
Hope this helps.
Regards,
Dr. Sumeet.