Tache
Tache
Tache (/tæʃ/), from the French word tache meaning "spot" or "stain", is a term used in medicine to describe a small area of color change on the skin or mucous membranes. It is often used in the context of describing certain types of rashes or lesions.
Etymology
The term tache is derived from the French word tache, which translates to "spot" or "stain". It was adopted into the English language in the late 19th century and has been used in the medical field to describe certain types of skin changes.
Related Terms
- Macule: A macule is a flat, distinct, discolored area of skin less than 1 centimeter wide. It doesn't involve any change in the thickness or texture of the skin. Taches are often referred to as macules, especially when they are flat and do not protrude above the surface of the skin.
- Papule: A papule is a small, raised bump on the skin. It is typically less than 1 centimeter in diameter. Taches can sometimes be raised, in which case they may be referred to as papules.
- Nodule: A nodule is a growth of abnormal tissue. Nodules can develop just below the skin. They can also develop in deeper skin tissues or internal organs. If a tache is significantly raised, it may be referred to as a nodule.
- Vesicle: A vesicle is a small, fluid-filled blister on the skin. If a tache is filled with fluid, it may be referred to as a vesicle.
- Bulla: A bulla is a blister that is larger than 1 centimeter in diameter. If a tache is large and filled with fluid, it may be referred to as a bulla.
- Pustule: A pustule is a small blister or pimple on the skin that contains pus. If a tache is filled with pus, it may be referred to as a pustule.
- Petechiae: Petechiae are tiny, flat, red or purple spots on the skin or mucous membranes caused by bleeding. If a tache is caused by bleeding under the skin, it may be referred to as a petechia.
- Purpura: Purpura are red or purple discolorations on the skin that do not blanch on applying pressure. They are caused by bleeding underneath the skin. If a tache is a larger area of bleeding under the skin, it may be referred to as purpura.
External links
- Medical encyclopedia article on Tache
- Wikipedia's article - Tache
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