A myxoid cyst is a small, benign lump that occurs on fingers or toes, near a nail. It’s also called a digital mucous cyst or mucous pseudocyst. The cause of myxoid cysts isn’t certain.

Understanding the Context

They’re usually ... Mucous cysts are pseudocysts (cystic structures lacking a true lining) that usually appear on the middle or index finger of the dominant hand; toe involvement is uncommon. Although most mucous cysts ... Stevens-Johnson syndrome (SJS) is a rare, serious disorder of the skin and mucous membranes.

Key Insights

It's usually a reaction to medication that starts with flu-like symptoms, followed by a painful rash that spreads and blisters. Then the top layer of affected skin dies, sheds and begins to heal after several days. Stevens-Johnson syndrome is a medical emergency that usually requires hospitalization ... Learn about symptoms, causes, treatment and self-care tips for this group of rare conditions that causes blisters and sores on the skin or mucous membranes. Oral lichen planus can't be passed from one person to another.

Final Thoughts

The condition occurs when the immune system attacks cells of the oral mucous membranes for reasons that aren't known. Symptoms usually can be managed. But people who have oral lichen planus need regular checkups. That's because oral lichen planus — especially the erosive type — may raise the risk of getting mouth cancer in the ... Drugs & Supplements Amlexanox (mucous membrane, oral route) - Side effects & dosage Diphtheria (dif-THEER-e-uh) is a serious bacterial infection that usually affects the mucous membranes of the nose and throat. Diphtheria is extremely rare in the United States and other developed countries thanks to widespread vaccination against the disease.

However, many countries with limited health care or vaccination options still experience high rates of diphtheria. Diphtheria can be ... Your digestive tract is coated with a mucous layer that most often protects against acid. But if the amount of acid increases or the amount of mucus decreases, you could develop an ulcer.