What Are Some Causes of an Itchy Rash on the Scrotum?

What Are Some Causes of an Itchy Rash on the Scrotum?

One cause for an itchy rash on the scrotum is jock itch, a fungal infection, according to the National Center for Biotechnology Information. A second possible cause is dermatitis due to allergic reactions or other conditions.

Jock itch is a type of ringworm. The infection often has a raised ridge near the edges. Doctors generally identify jock itch by sight but may take samples to grow a culture for identification. Keeping the area dry and wearing clean, loose fitting clothes, along with the use of over-the-counter medication twice daily for 10 days usually clears up the infection, but a doctor sometimes writes a prescription for persistent cases.

Contact dermatitis is also a cause of rashes on the scrotum. The skin comes in contact with a variety of materials that have the potential to cause a rash. Clothing dyes, medications and chemicals from the job can cause the rash, according to NCBI.

Some men also have allergic reactions to rubber products used in condoms or nonoxynol, a spermicide that cause the rash, warns NCBI. Topical antibiotics and antiseptics can also cause a reaction.

Scrotal dermatitis can also be related to nutritional deficiencies, such as a lack of magnesium, reports NCBI. Medical conditions, including diabetes, sometimes cause the rash. General dermatological diseases, such as psoriasis, are also sometimes responsible.