Noise-cancelling headphones are battery-powered headphones that actively cancel out the ambient noise surrounding a listener. The most common use for them is during plane journeys. While sound-isolating earphones will block out chatter, it won't get rid of the noise of a jet engine. Noise-cancelling headphones will. Put simply, they work by using tiny microphones that listen to the noise surrounding the listener.
detected esophageal lichen planus in 12 out of 24 patients diagnosed with orocutaneous lichen planus. One-third of these patients showed symptoms such as dysphagia and odynophagia. 2 Esophageal involvement is more frequent in patients with oral lichen planus than in anogenital or cutaneous manifestation.
In the mouth, lichen planus appears as white, net-like patches, most often seen on the inner cheeks. This oral lichen planus does not usually cause symptoms, though severe outbreaks may develop painful sores and ulcers in the mouth.n the scalp, lichen planus (called lichen planopilaris) may cause redness, irritation, and, in some cases, permanent hair loss. On the penis, lichen planus appears similar to lesions on other areas of the skin. In the vulva or vagina, lichen planus may appear as bright red patches or sores.