White Patches on the Skin: What Causes Them?

White Patches on the Skin: What Causes Them?

White patches on the skin are a relatively common medical problem that can come from a variety of causes ranging from fungal infection to vitamin deficiencies. If you’re experiencing this problem, it’s best to see a doctor for a definitive diagnosis, but here are some of the most common causes of this rather frustrating symptom.

White Patches on the Skin Caused by Skin Conditions

Two of the most common skin conditions that cause white patches on the skin are psoriasis and eczema. With psoriasis, the patches are usually red in color, but they may be covered with a layer of silvery scales that causes them to appear white in color. Usually, people who with psoriasis have a prior history of psoriasis outbreaks or have a strong family history. Eczema, on the other hand, can happen to anyone although it’s more common in people with allergies or asthma. Eczema usually causes an itchy, scaly rash that may undergo color changes to form white patches on the skin. At times, it can be hard to distinguish psoriasis from eczema.

White Patches on the Skin Due to Fungal Infection

Another condition that can cause white patches on the skin is tinea versicolor – a skin condition caused by a fungus. The white patches of tinea versicolor are usually found on the chest or back and appear more pronounced with a suntan. If your skin isn’t tanned, the patches may be pink or light brown in color. The fungus that causes tinea versicolor normally lives on the skin without causing problems, but certain factors such as excessive sweating, hormonal changes, and decreased immunity can cause the fungus to proliferate and cause skin changes. It’s usually treated with topical or oral anti-fungal medications.

White Patches on the Skin Due to Depigmentation

White patches on the skin can also come from vitiligo – a condition where the skin loses its pigment in certain areas leading to patchy areas of white. No one knows what causes this condition, although it’s thought to be autoimmune. Unfortunately, there’s no cure for vitiligo, but there are treatments that can improve its appearance – although treatment is expensive and it can take a while to see results.

A Vitamin Deficiency That Can Cause White Patches

B12 deficiency can also cause white patches on the skin. B12 deficiency is most common in people with pernicious anemia, but it can also occur in long-term vegans. B12 deficiency can have serious neurological consequences, so it’s smart to get a level checked if you notice white spots or patches or have any unexplained neurological symptoms.

Keep these conditions in mind, but see your doctor for a definitive diagnosis.