Need more information
Hi. Thanks for posting your concern at HCM.
Dark red patch on the sides of nose could possibly be either Seborrheic dermatitis Or Allergic contact dermatitis
Or Irritant contact dermatitis.
I would like to gather some more information from you in order to be able to help you better.
--Since how long have you noticed the patch(es)?
--Are they on one side or on both the sides?
--What are the symptoms associated with the patch(es)? Are they Itchy?
--Can you please upload a clear picture of the area of concern? I would be able to help you better by having a look at it as to what exactly it is.
--What products do you use on your face?Soaps/Face washes, Sunscreens, Moisturizers etc?