Achromia is a medical term that refers to the absence or loss of color in skin, hair, and eyes. There are various synonyms that are used to describe this condition, such as albinism, hypopigmentation, depigmentation, and leukoderma. Albinism is a genetic disorder that affects melanin production, causing pale skin, white hair, and pinkish eyes. Hypopigmentation refers to a decrease in melanin production, resulting in lighter patches of skin. Depigmentation is the loss of melanin in the skin, leading to discoloration. Leukoderma is a condition that causes white patches on the skin due to a lack of pigmentation. While these terms have slightly different meanings, they all relate to the absence or loss of color in the skin, hair, or eyes.