seborrheic dermatitis – causes, symptoms and treatment
When dealing with seborrheic dermatitis, a chronic inflammatory skin condition that produces scaly patches, redness and itching, usually on the scalp, face, or chest. Also known as seborrheic eczema, it tends to flare with stress, hormonal shifts, or cold weather. A key player behind the scenes is Malassezia, a lipophilic yeast that thrives in oily skin areas. When this yeast multiplies excessively, it releases irritants that trigger the immune response, leading to the hallmark flaking and redness. Understanding that seborrheic dermatitis is linked to this fungal overgrowth helps you see why treatments often target the yeast directly rather than just soothing the skin.
How to tackle the flare and keep the skin calm
Effective control starts with eliminating the yeast’s food source and calming the inflammatory reaction. The most common frontline tool is an antifungal shampoo, usually formulated with ketoconazole or selenium sulfide. Regular use reduces Malassezia levels, which in turn diminishes scaling and itching. For stubborn patches, dermatologists often add a topical corticosteroid, such as hydrocortisone, to quickly suppress the immune response and relieve redness. The combination creates a two‑pronged approach: the shampoo attacks the root cause, while the steroid eases the symptom flare. Many patients also find that gentle cleansing, non‑comedogenic moisturizers, and avoiding harsh hair products prevent the skin barrier from breaking down, further limiting yeast growth.
Beyond medication, lifestyle tweaks can keep future outbreaks at bay. Keeping stress levels low, using a humidifier in dry winter months, and opting for a balanced diet rich in omega‑3 fatty acids support skin health. If you notice a pattern—like flare‑ups after a particular shampoo or after a stressful week—track it and adjust accordingly. Armed with this mix of targeted antifungal action, anti‑inflammatory relief, and everyday skin‑friendly habits, you’ll be better prepared to manage the condition. Below you’ll find a curated selection of articles that dive deeper into each treatment option, share practical tips, and answer common questions about living with seborrheic dermatitis.
