You notice a scaly, itchy rash on your skin and immediately start wondering what’s causing it. Two common culprits that can look surprisingly similar are psoriasis and ringworm, but getting the right ...

An itchy scalp can develop due to a variety of causes, including your hair-washing routine, head lice, psoriasis, and more. How to find relief depends on the cause. Jump to Key Takeaways. Any product ...

Medically reviewed by Brendan Camp, MD Seborrheic dermatitis and scalp psoriasis commonly cause dandruff, which may lead to ...