Brief Answer:
Most common causes listed

Detailed Answer:
Hello sir and welcome.

Thank you for writing to us.

I have gone through your query with diligence and would like you to know that I am here to help. There can be a few causes for thinned skin which can result in easy bruising:

+Steroid use: Is a very common cause for this
+Age: If you have noticed gradual thinning of your skin this is most likely due to the gradual loss of a few protective layers with age, this is considered normal
+Chronic conditions like diabetes
+Certain medications can cause this side effect
+Blood disorders: But this can present as bleeding and difficulty in stopping or controlling the bleed

I hope I have explained things in a manner best understood by you, please do not hesitate to write back to me for any further clarifications, I am always here to help.

Best wishes.

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