A key characteristic of seborrhea is excessive greasiness and scaling of the skin. This is due to abnormal cornification, or the process of skin cell maturation and shedding. The overproduction of sebum (oil) contributes to this greasy, scaly appearance, often affecting areas like the scalp and face. In some cases, this manifests as dandruff.
Understanding Seborrhea's Manifestations
Seborrhea, encompassing conditions like seborrheic dermatitis and dandruff, presents with several common features:
- Greasy, scaly skin: This is the hallmark symptom, resulting from the overproduction of sebum and abnormal skin cell turnover.
- Red, itchy skin: Inflammation is often present, leading to redness and itchiness in the affected areas.
- Flaking skin: The excessive scaling can manifest as visible flakes, particularly on the scalp (dandruff).
- Potential for inflammation: Seborrheic dermatitis, a type of seborrhea, is characterized by inflammation of the upper skin layers.
These features can vary in severity depending on individual factors and the specific type of seborrheic condition. For example, seborrheic dermatitis in infants (cradle cap) may present differently than adult seborrheic dermatitis.
Differentiating Seborrhea from other Skin Conditions
It's crucial to differentiate seborrhea from other skin conditions with similar symptoms. The "pasted on" look of seborrheic keratosis, for example, is distinct from the greasy, scaly nature of seborrhea. Accurate diagnosis requires professional evaluation by a dermatologist. Medical professionals will also consider factors such as hormonal changes and environmental conditions when making a diagnosis.
