Macule

The macule is the simplest dermatological lesion. It is flat and can only be seen and not felt. The macule is noted by a change in color of the skin. It may be brown, blue, red or exhibit a lesser pigment or an absence of pigment. The color of the lesion is one way in which a diagnosis may be focused.

Macules may develop as a result of cystic or otherwise severe acne. They occur after a pimple or cyst has healed, and may remain for up to six months. They are sometimes known in such cases as "pseudo-scars", but unlike true scars they are not permanent.

Examples of macular lesions and disorders

 * Freckle
 * Vitiligo
 * Tinea versicolor
 * Becker's nevus
 * Café-au-lait spot
 * Erythrasma
 * Fixed drug eruption
 * Junctional nevus
 * Lentigo maligna
 * Lentigo
 * Lewandowsky-Lutz dysplasia
 * Melasma
 * Phototoxic drug eruption
 * Stasis dermatitis
 * Mongolian spot

Brown

 * Becker's nevus
 * Café-au-lait spot
 * Freckle
 * Melasma
 * Photoxic drug eruption

Blue

 * Ink (tattoo)
 * Mongolian spot
 * Ochronosis

Red

 * Drug eruptions
 * Juvenile rheumatoid arthritis
 * Rheumatic fever
 * Viral exanthems

Hypopigmented

 * Piebaldism
 * Radiation dermatitis
 * Vitiligo
 * Tuberous sclerosis

Macule Plama (dermatologia) Chấm (da liễu học)