What are the causes of vitiligo

summary

I suffer from vitiligo is caused by secondary factors, was detected cysteine, dimercaptopropanol improper use, understanding the cause of vitiligo overall treatment is of great help. Let's take a look at the causes of secondary vitiligo.

What are the causes of vitiligo

One of the reasons: induced by direct contact, such as the occurrence of vitiligo, the best treatment in the eye around the white spot, often caused by the use of eye drops.

The second reason: it is induced by light sensitivity, such as taking artificial perfume, oral hypoglycemic drugs and antihypertensive diuretics. These drugs contain sulfonamides, which have light sensitivity. In addition, the synthesis of melanin intermediate metabolites by hyperfunctional melanocytes increases, which enhances the toxic effect on melanocytes and aggravates the damage of melanocytes. Therefore, patients with vitiligo should avoid the use of photosensitive drugs in summer and autumn to avoid the occurrence of secondary vitiligo.

The third reason: drugs containing sulfhydryl group. There are cystine, cysteine, dimercaptopropanol, penicillamine and so on. These drugs have strong complexation with metal ions, can reduce the level of copper ions in the blood, reduce the production of tyrosinase, and can compete with copper ions on tyrosinase to reduce or inactivate tyrosinase activity, reduce the synthesis of melanin, so as to induce or aggravate the condition of vitiligo. In the treatment of vitiligo complications, should avoid the use of drugs containing sulfhydryl, in order to avoid aggravating the disease.

matters needing attention

Vitiligo patients should not be exposed to the sun, but appropriate exposure to ultraviolet light will activate melanocytes, so that skin color recovery. Choose the time of sunshine should be autumn and winter two seasons afternoon, can bask for a while, but not more than 4 o'clock.