Hello. There are many possible causes for a genital rash, ranging from infections that are treatable to a sexually transmitted disease, allergies, and autoimmune disorders. Thick white discharge you mentioned may not be normal. Some of the most common causes of genital rashes are infections: 1. Jock itch is a fungal infection, or ringworm of the groin area. The rash is red, itchy, and scaly, and it may blister. 2. Molluscum contagiosum is a viral infection that affects the skin and presents as firm, isolated, round bumps. They may be itchy and inflamed. 3. Balanitis is an inflammation of the foreskin or the head of the penis that is usually caused by poor hygiene. It causes itchiness, redness, and a discharge. Infecting parasites are another possible cause of a genital rash: 1. Pubic lice are tiny insects. They lay eggs in the genital area and are most often spread from person to person through sexual contact. They are most commonly seen in teenagers. An infestation of pubic lice causes itchiness and sometimes sores. 2. Body lice are different from pubic lice and are larger. They live in clothing and on the skin, and feed on blood. They cause an itchy rash on the skin. 3. Scabies is an itchy skin rash that is caused by very small mites. They burrow into the skin and cause intense itching, especially at night. Allergies and autoimmune disorders are other possible causes of a genital rash: 1. Contact dermatitis is a common type of rash caused when skin comes into contact with an allergen or with an irritant like a harsh chemical substance. Latex is an allergen that may produce a rash in the genital area because it’s commonly used in condoms. 2. Psoriasis is a common skin condition. The cause is unknown, but doctors suspect it’s an autoimmune disorder. It can produce a pinkish, scaly, itchy rash anywhere on the body. In men, psoriasis may also produce sores in the genital area. 3. Lichen planus is less common, but also produces itchy skin rashes. Doctors are unsure of the exact cause, but it is thought to be due to an allergen or autoimmune disorder. In the genital area, lichen planus can produce sores. 4. Reactive arthritis, or Reiter’s syndrome, is an arthritis that occurs in reaction to an infection by certain bacteria, such as Chlamydia, Salmonella, or Shigella. Chlamydia can cause genital discharge. You need to consult a dermatologist and get examined and get appropriately treated. regards- Dr Sanjay Kini