Getting familiar with the types of hyperpigmentation will help you determine the right course of treatment and give you ideas for lifestyle changes you can make to prevent further discoloration from occurring. Understand that hyperpigmentation does not only occur on your face. Here are the four types of hyperpigmentation:   Melasma. This type of hyperpigmentation is caused by hormonal fluctuations, and is a normal occurrence during pregnancy. It can also occur as a result of thyroid dysfunction and as a side effect of taking birth control pills or hormone therapy medication. This is a difficult type of hyperpigmentation to treat.  Lentigines. These are also known as liver spots or age spots. They are found on 90% of people over the age of 60, and are usually caused by exposure to UV rays. Non-solar lentigines is caused by a larger systemic disorder.  Post-inflammatory hyperpigmentation (PIH). This is caused by skin injury such as psoriasis, burns, acne, and some skin care treatments. It usually goes away as the skin regenerates and heals.  Drug-induced hyperpigmentation. This secondary hyperpigmentation, known as lichen planus, occurs when drugs cause an inflammation and eruption on the skin. It is non-contagious. See a dermatologist to find out what type of hyperpigmentation is affecting your skin. After asking you questions about your lifestyle and medical history, your skin will be examined using a magnifying lamp. Expect your dermatologist to ask the following questions to help determine what type of hyperpigmentation you have:  How frequently do you use a tanning bed? How often do you use sunscreen? What is your level of sun exposure? What are your current and past medical conditions? Are you or have you recently been pregnant? Are you or have you recently taken birth control or done hormone replacement therapy? What medications are you taking? What plastic surgery or professional skin treatments have you undergone? Did you wear sun screen or UV protection in your youth?

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Write a summary of the previous text in Indonesian:
Ketahui perbedaan jenis hiperpigmentasi. Konsultasikan kondisi Anda dengan dermatolog.