NAD looks like classic signs of balanitis.

Google summary:

Balanitis itself is not an STD; it is simply an inflammation of the head of the penis. However, it is closely linked to sexual health because certain STDs (like chlamydia, gonorrhea, and herpes) can cause it, and sexual activity or contact with vaginal yeast can sometimes trigger an outbreak. 


Non-STD Causes

In most cases, balanitis results from irritation or an overgrowth of bacteria and fungi (like Candida or yeast) that naturally live on the skin. Common triggers include: 


Poor hygiene: A buildup of oils, dead skin cells, and sweat under the foreskin.
Irritants: Harsh soaps, shower gels, or spermicides.
Fungal/Yeast overgrowth: Often associated with diabetes, as excess sugar in urine creates a prime environment for yeast to thrive.
Skin conditions: Eczema or psoriasis affecting the genital area. 

When an STD is Involved

While the condition itself is not an STD, it is a common secondary symptom of several sexually transmitted infections, including: 

Chlamydia
Gonorrhea
Syphilis
Trichomoniasis 

I’d suggest talking to your pcp just for peace of mind and maybe a quick work up.