Your immune system was supposed to protect you from threats, but sometimes it gets confused about what counts as an enemy and starts attacking your own healthy tissues. This internal betrayal happens ...

Lupus is a systemic autoimmune disease that creates inflammation in many parts of your body. It can also affect your skin, causing a rash or other skin changes. Most people with lupus will develop ...

Psoriasis and ringworm (tinea corporis) cause scaly rashes but have different causes and treatments. Psoriasis is an autoimmune condition, while ringworm is a fungal infection. Because they can look ...