Hyperpigmentation refers to darker skin patches compared to surrounding areas of skin, usually caused by excessive production of melanin, a pigment that gives skin its colour. Skin damage from acne, blisters, cuts, sun exposure, genetic factors, and autoimmune conditions are all possible causes for changes in melanin and, thus, skin pigmentation.
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Types of Pigmentation

Sunspots are flat, well-circumscribed patches. They can be irregular in shape and size varies from a few milimetres to centimetres in diameter. Sun spots are commonly caused by sun exposure and can occur anywhere on the face, back of the hands and body.

Freckles are small, flat brown spots which develop on sun-exposed areas like the face and are commonly seen in people with light complexion.

This is a skin pigmentation that occurs due to skin injury like trauma, burns, acne and eczema.

Melasma is a very common condition usually seen in women of childbearing age. They have irregular shapes, but often distinctly defined, blotches of light to dark brown pigmentation, and are usually seen on the upper lip, nose, cheeks, chin, forehead and sometimes, the neck.

Hori’s Nevus are seen commonly on the cheeks and appear as symmetrical grey-brown or blue-grey spots. They may also appear on the temples, nose, eyelids and forehead and are usually caused by genetic predisposition and hormones.

Blue pigmentation which occurs on the face and can involve the sclera (whites of the eye). It can also involve the forehead and around the eye. It occurs at birth or at puberty.

Risk Factors That Cause Hyperpigmentation

Skin trauma like acne, eczema, cuts, bug bites, etc can cause pigment-producing cells to work harder, and leave behind a dark spot after the injury has healed. Skin discolouration caused by inflammation is commonly known as post-inflammatory hyperpigmentation.

UV rays from the sun can trigger extra melanin production to defend your skin from damage, and that is what a tan is. But excessive exposure to the sun can make dark sunspots appear.

Brown patches that appear in women due to fluctuating hormone levels, such as during pregnancy. Melasma often occurs in women, but can also occur in men.

Addison’s disease, an adrenal gland disorder can increase production of melanin. Vitiligo is a condition that causes patches of light skin. Albinism is a genetic condition affecting a person’s skin. A person with albinism may have no color, lighter than normal skin colour, or patchy missing skin colour.

Drugs like antibiotics, nonsteroidal anti-inflammatory drugs (NSAIDs), and antimalarials can also increase the risk of hyperpigmentation.

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Meet Our Doctors

Every step of the treatment will be customized to your needs by our team of doctors. You are the very reason why we are here.

Dr. Anna Hoo (MD)


  • MD, Universiti Sains Malaysia
  • Certified International Trainer

Dr. William Hoo (MD)


  • MD, Universiti Sains Malaysia
  • Diploma in Aesthetic Medicine of AMERICAN ACADEMY OF AESTHETIC MEDICINE – AAAM®

Dr. Ian Tan (MD)


  • MD, Universiti Sains Malaysia
  • Diploma in Aesthetic Medicine of AMERICAN ACADEMY OF AESTHETIC MEDICINE – AAAM®

Dr. Eileen (MD)

  • MBBS, AIMST University, Malaysia
  • Post Graduate Diploma in Dermatology (South Wales, UK)
  • Professional Diploma in Aesthetic Medicine by IIWAM & European International University (Paris)

Dr. Joyce (MD)

  • MD, Mahsa University
  • Professional Diploma in Aesthetic Medicine ( IIWAM | EIU, Paris)

What Makes Us Special?

THE HOLISTIC AESTHETICS APPROACH – At Anna Hoo Clinic, our patient will never be offered a standard, one-size-fits-all solution. Instead, the patient are prescribed treatments that are tailored to their specific needs rather than generic solutions. This unique approach embraces a variety of modalities in one treatment regime so that patients can reap multiple benefits while minimising side effects from overdosing from one particular treatment.

The treatment plan is based on the belief that each individual is unique with different mental, social and physical needs. Importantly, it digs deep to discover the types of therapies and treatments that best align with the patient’s desires.

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