Skin diseases A-Z Skin diseases H – K Hemangiomas February 28, 2025 / August 13, 2026 by Dick van Gerwen | Leave a Comment Symptoms: Appearance: Red or purple nodules on the skin, often described as “strawberry marks.” Size and Shape: Can vary; some remain small, while others grow. Location: Commonly on the skin, but can also occur internally. Causes: The exact cause of hemangiomas is unknown, but genetic factors may play a role. Diagnosis: Diagnosis is usually made […] Read more » Benign skin tumor Blood vessel tumor Capillary hemangioma Congenital vascular anomaly Hemangioma treatment Hemangiomas Infantile hemangioma Red spot on the skin skin discoloration Vascular tumor
Skin diseases A-Z Skin diseases S – Z Strawberry-hemangioma February 13, 2025 / August 12, 2026 by Dick van Gerwen | Leave a Comment How do hemangiomas and port-wine stains develop?The exact cause of hemangiomas and port-wine stains is not known. What are the characteristics?Hemangioma: Often starts as a light red or pale spot with small red dots or veins. Grows in the first few months into a purple-red tumor or thickened area (strawberry-like). Deep hemangiomas appear bluish and […] Read more » Benign skin tumor Blood vessel disorder Blood vessel tumor Congenital skin anomaly Hemangioma Laser treatment for port-wine stain Port-wine stain Red spot on the skin skin discoloration Vascular malformation
Skin diseases A-Z Skin diseases H – K Progressive Macular Hypomelanosis January 30, 2025 / August 12, 2026 by Dick van Gerwen | Leave a Comment Symptoms The main symptoms of PMH include: Small, light-colored spots on the skin, generally a few millimeters to several centimeters in size. The spots typically appear on the arms, legs, and trunk. These spots tend to slowly expand and can increase in number over time. There is usually no itching or pain associated with the […] Read more » genetic skin disorder hypomelanosis macularis progressiva Increased skin pigmentation Light skin patches Loss of skin pigment Macular hypomelanosis Pigment loss Progressive pigment change Progressive skin condition Rare pigmentation disorder Rare skin condition Skin abnormality Skin changes skin discoloration Skin discoloration treatment Skin pigmentation Symmetrical skin discoloration
Skin diseases A-Z Skin diseases H – K Hypomelanosis Guttate Idiopathic January 30, 2025 / August 12, 2026 by Dick van Gerwen | Leave a Comment Symptoms The main symptoms of idiopathic guttate hypomelanosis include: Small, well-defined, round or oval white spots on the skin. Spots usually appear on sun-exposed areas of the body such as the forearms, shins, and shoulders. The condition is typically asymptomatic, meaning there is no itching or pain associated with the spots. Causes The exact cause […] Read more » hypomelanosis guttata idiopathica idiopathic guttate hypomelanosis Idiopathic skin condition Loss of pigment Pigment loss Pigmentation disorders Skin abnormalities from sun exposure Skin changes due to aging Skin changes from sun skin discoloration Skin problems from sun Small white spots on the skin Sun spots Sun-damaged skin Treatment for hypomelanosis guttata idiopathica white spots on the skin
Skin diseases A – C Skin diseases A-Z Ashy Dermatosis (erythema dyschromicum perstans) January 30, 2025 / August 12, 2026 by Dick van Gerwen | Leave a Comment Symptoms The main symptoms of ashy dermatosis include: The appearance of gray to blue-gray patches with an ashy appearance. Patches that can appear anywhere on the body but are often seen on the torso and limbs. The skin condition is usually painless and does not cause itching. Causes The exact cause of ashy dermatosis is […] Read more » ashy dermatosis Chronic erythema Erythema with skin spots Gray skin abnormality Gray spots on the skin Loss of skin pigment Persistent erythema dyschromicum Pigmentation disorders Skin abnormality due to inflammation Skin abnormality with red spots Skin changes due to erythema Skin changes due to inflammation Skin condition skin discoloration Skin rash Treatment of ashy dermatosis
Skin diseases A-Z Skin diseases P – R Poikiloderma Civatte (confetti skin, sun neck) September 13, 2024 / August 12, 2026 by Dick van Gerwen | Leave a Comment Symptoms Redness: The skin shows a red discoloration, especially on the neck and face. Brown spots: Dark spots or pigment changes may appear on the skin. Thin blood vessels: Fine blood vessels, also known as couperose, can become visible. Causes While the exact cause of Poikiloderma Civatte is unknown, several factors contribute to its development: […] Read more » Aging skin confetti skin Pigment shift Pigmentation change in the neck Poikiloderma Civatte Reddish-brown patches Skin abnormality from sun exposure Skin abnormality from the sun skin aging Skin changes from sun exposure skin discoloration Skin rash from sun Skincare for poikiloderma sun damage Sun damage to skin Sun neck Sun-related skin discoloration UV radiation skin damage
Skin diseases A-Z Skin diseases L – O Melasma May 30, 2024 / August 12, 2026 by Dick van Gerwen | Leave a Comment Symptoms Dark, irregular patches on parts of the face such as the cheeks, bridge of the nose, forehead, chin, and upper lip. Patches can also appear on other parts of the body that are often exposed to the sun, such as the forearms and neck. Causes Melasma is caused by an overproduction of melanin, the […] Read more » chloasma Dark spots on the skin Facial pigmentation Facial pigmentation spots Hormonal hyperpigmentation Increased pigmentation melasma Melasma treatment Pigment disorders Pigmentation spots Pregnancy mask Skin abnormality Skin changes during pregnancy skin discoloration Spots on the face Sun discoloration Sun spots
Skin diseases A-Z Skin diseases L – O Becker’s Nevus May 24, 2024 / August 12, 2026 by Dick van Gerwen | Leave a Comment Symptoms A large, light brown to dark brown colored spot on the skin. Usually visible on the shoulder, upper arm, or back. The spot may be hairy and sometimes feel thicker than the surrounding skin. May increase in size over time. Causes The exact cause of Becker’s Nevus is not known. It is suspected that […] Read more » Becker's mole Becker's naevus Becker's naevus symptoms Benign skin condition Hormonal skin condition Hormonal skin disorder Increased pigmentation Irregular pigment spot Large pigment spot Naevus treatment Pigment spot Skin abnormality Skin abnormality on the back Skin abnormality on the shoulder Skin changes in men Skin condition skin discoloration
Skin diseases A – C Skin diseases A-Z Couperose May 17, 2024 / August 12, 2026 by Dick van Gerwen | Leave a Comment Symptoms Redness on the face, especially on the cheeks, nose, forehead, and chin. Visible small blood vessels (telangiectasia). Sensitive skin, sometimes with a burning sensation. Causes Genetic factors: Familial predisposition increases the risk. Age: More common in middle-aged and older individuals. Skin type: People with fair skin are more susceptible. Skin diseases: Rosacea can cause […] Read more » couperose Couperose treatment Enlarged blood vessels Facial problems from couperose Facial skin problems Facial wrinkles Redness due to skin irritation Redness in the face Redness of the skin rosacea Skin condition skin discoloration Skin disease Skin Irritation Small visible blood vessels Vessels in the face Visible blood vessels Visible blood vessels on the face
Skin diseases A-Z Skin diseases P – R Pityriasis Versicolor May 17, 2024 / August 12, 2026 by Dick van Gerwen | Leave a Comment Symptoms Pityriasis Versicolor is characterized by discolored patches on the skin, which can range from white, pink, salmon-colored to brown. These patches are usually found on the back, chest, neck, and upper arms. Some people experience mild itching, especially when warm or sweating, and the skin may be slightly flaky. Causes The condition is caused […] Read more » Fungal on the skin Fungal skin infection Fungal treatment Itchy skin Light or dark skin patches Pityriasis treatment pityriasis versicolor Pityriasis versicolor symptoms Scaly Skin Skin condition from fungus skin discoloration Skin discoloration after sun Skin discoloration from fungus Sun spots Tinea treatment Tinea versicolor
Skin diseases A – C Skin diseases A-Z Blue Nevus May 14, 2024 / August 12, 2026 by Dick van Gerwen | Leave a Comment Symptoms Small blue or bluish spots or bumps on the skin, well-defined and uniform in color, usually flat or slightly raised. Causes The condition occurs when certain pigment cells, called melanocytes, accumulate in the skin. Diagnosis Potential differential diagnoses include blue melanoma, Spitz nevus, dermatofibroma, and vascular lesions. Treatment Often, no treatment is needed. Options […] Read more » Benign skin lesion Blue mole Blue naevus Blue skin pigmentation Dark spot on the skin Melanocytic naevus Pigmented spot Skin check skin discoloration