Why do white spots appear on the skin? – Page 2

Bacterial or fungal infections (e.g. leprosy in endemic areas, but rare).
Nutritional deficiencies (vitamin B12, copper or zinc, although this rarely occurs).
Medicines (including some long-acting topical corticosteroids).
Genetic disorders (partial albinism, piebaldism – rare).
Lichen sclerosus or morphea (autoimmune diseases that cause hardened white patches).

Most white spots are benign, but consult a doctor if you notice the following:

Spots that grow or change shape rapidly.
Symmetrical and progressive pigment loss (suspected vitiligo).
Patches with scaling, intense itching, or redness.
Sudden onset in adults over 50 years of age.
It is often accompanied by other symptoms (hair loss, extreme fatigue, thyroid problems – vitiligo is associated with autoimmune diseases).
Spots in the genital area, on the mucous membranes, or around the eyes/mouth.
- Always use sunscreen with a high SPF (50+) on the affected areas (the sun worsens the discoloration).
- Hydrate your skin well (with creams containing ceramides or urea).
- Avoid scratching or exposure to irritating substances.
- Do not use harsh home remedies (pure lemon, vinegar) unsupervised → these can cause further irritation.
In summary: white spots are usually benign (guttate hypomelanosis due to sun exposure/age, pityriasis versicolor due to a fungus, pityriasis alba due to dryness/atopy), but vitiligo and other autoimmune diseases require an accurate diagnosis. If you are concerned about them or if they change, a dermatologist can easily identify them (sometimes using a Wood’s lamp or biopsy) and advise you on treatments (creams, light therapy, etc.).

Are the spots small and scattered over the arms/legs, or larger and on the face/hands? Do they itch or are they scaly? Tell me more details so I can give you a better