Light brown spots on the skin may be café-au-lait spots or nevi, the scientific word for moles, explains Cleveland Clinic. Both are types of pigmented birthmarks. Te spots might also indicate neurofibromatosis.Know More
About 10 percent of people have one or two café-au-lait spots that are not due to any disorder, but the presence of more than six spots that measure over 1/2 centimeter in diameter may indicate a genetic disorder called neurofibromatosis, notes Cleveland Clinic. The spots may have either a smooth or an irregular border.
There are three types of neurofibromatosis: NF1, NF2 and schwannomatosis, explains Mayo Clinic. Café-au-lait spots are associated with NF1, the most common form of neurofibromatosis. The spots do not pose any health risks, although they can be a cosmetic concern. Other symptoms of NF1 are soft bumps, called neurofibromas, either on the surface of the skin or under the skin, bone deformities, learning disabilities, short stature, a larger-than-average head and freckling in the groin area or underarms.
Nevi can appear as either flat or raised, dark or light brown spots, explains Cleveland Clinic. The majority of them are harmless, but some can turn into melanoma, necessitating monitoring of them for abnormal changes or appearances, such as bleeding, crusting, uneven borders, size changes, itching, asymmetry or pain.Learn more about Pain & Symptoms
Actinic keratosis, a common skin condition, can cause crusty brown spots on skin, typically called age spots or sun spots, according to Healthline. The scaly spots develop when keratinocytes, which are skin cells, begin growing abnormally. The patches of discolored skin may also be pink, grey or tan.Full Answer >
WebMD states that vitiligo and pityriasis alba cause light patches on the skin. While people of any color can have these two conditions, it is most easily seen on dark skin. Pityriasis alba mostly occurs on the skin of black children.Full Answer >
Excessive sun exposure is a common cause of brown spots on the scalp due to conditions such as melasma and actinic keratosis, per the Mayo Clinic and the American Academy of Dermatology. While these conditions differ slightly from each other, they both are frequently caused by excessive ultraviolet radiation.Full Answer >
Common causes of brown spots on lips include anemia, smoking or drug use, dermatitis, sun exposure, certain medications and nutritional deficiencies due to eating disorders, according to Health Hype. Other possible causes of brown spots may be dry lips, jaundice or Peutz-Jeghers syndrome, which is associated with intestinal cancer.Full Answer >