Irritation can also be due to a build-up of sweat and urine from not washing under your foreskin properly, or from scrubbing or excessive washing of the penis. Apr 13, - Balanitis is irritation of the head (glans) of your penis. It's usually caused by poor hygiene or an infection. You're more likely to develop balanitis if you're uncircumcised. Red spots, swelling, and itching are common symptoms.Quick symptom chart · Genital herpes · Syphilis · Balanitis.