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treatment of dark spots

we can use creams and serums contain various ingredients, including retinol or alpha hydroxy acid, which may speed up the exfoliation of the skin and promote new skin growth.
Dark spots on the skin do not require treatment, but some people may want to remove the spots for cosmetic reasons.
A dermatologist can offer creams or procedures to lighten dark spots, or in some cases, remove them. Procedures are more expensive than creams and are more likely to cause side effects, though they tend to work faster.
The best treatment option may depend on the cause, the size of the dark spot, and the area of the body.
A dermatologist may recommend one of the following treatments for dark spots on the skin:

• Laser treatment
• Microdermabrasion
• Chemical peels
• Cryotherapy
• Prescription skin-lightening cream
• Hydroquinone, which is the active ingredient in the creams, prevents the skin from producing melanin. Prescription products tend to have a strength of 3–4 percent.

how to diagnose it :

A doctor or dermatologist can often work out the cause of dark spots on the skin by examining
them and taking a medical history.
During a physical exam, the healthcare professional might perform a Wood’s lamp skin exam, where they view the spots through a special device that emits black light.
In some instances, specific characteristics of a spot might require more tests to make sure skin cancer is not causing the spot.

causes of dark spots:

• Sun damage
• Hormonal changes
• According to the American Academy of Dermatology, hormones may trigger melasma.
• Medication side effects:The most common culprits are non-steroidal anti-inflammatory drugs (NSAIDs), tetracyclines, and psychotropic drugs.
• Inflammation
• Wound healing
• Irritation
• Diabetes

You should be examined by dermatologist