### Psoriasis vs. Ringworm: How to Tell the Difference Both psoriasis and ringworm cause red, itchy rashes, but they have distinct characteristics and treatments. Here's a simple guide to help you differentiate between the two. #### What is Ringworm? - **Cause**: Ringworm, also known as tinea, is a fungal infection. Despite its name, it has nothing to do with worms. - **Appearance**: It typically appears as a thin red circle with a clear middle. The skin can become scaly as the infection progresses. - **Contagious**: Yes, ringworm is highly contagious and can spread through skin-to-skin contact, pets, or contaminated objects like towels and hairbrushes. - **Treatment**: Mild cases can be treated with antifungal creams. Severe cases may require oral medication. #### What is Psoriasis? - **Cause**: Psoriasis is an autoimmune disease where the immune system sends incorrect signals, causing skin cells to multiply too quickly. - **Appearance**: It starts as rough, scaly red patches that can be covered by thick, silver-colored scales. These patches can be itchy and painful. - **Contagious**: No, psoriasis is not contagious and cannot be passed from person to person. - **Treatment**: While there is no cure, medications can ease symptoms. Treatments range from topical creams to stronger drugs like biologics that target specific parts of the immune system. #### Key Differences - **Source**: Ringworm is caused by a fungus, while psoriasis is an autoimmune condition. - **Contagion**: Ringworm is contagious; psoriasis is not. - **Treatment**: Ringworm can be cured with antifungal treatments, whereas psoriasis requires ongoing management. #### When to See a Doctor If you have a rash that doesn't improve or worsens, consult a doctor. Both conditions require specific treatments for effective management.