∆∆ scalp: Psoriasis, fungal infection.
∆∆ face: Psoriasis, contact dermatitis, rosacea.
∆∆ trunk: Psoriasis, pityriasis versicolor, fungal infection.
- Sebum production is normal, but the eruption often occurs in the sebaceous gland areas of the face, scalp, chest.
- Genetics + overgrowth of the commensal yeast Malassezia.
- Severe in some patients with HIV.
Clinical presentation
- Scalp and facial involvement: Excessive dandruff. Itchy scaly erythematous eruption affecting the nose, scalp margin, eyebrows, ears. Blepharitis (inflammation of eyelids) may occur. Most common in young males.
- Petaloid: A dry, scaly patch of eczema over the presternal area.
- Pityrosporum folliculitis: An erythematous follicular eruption with pustules or papules over the back.
- Flexural: Axillae, groins, submammary. Moist intertrigo (inflammation produced by chafing of adjacent areas of skin), often secondarily colonised by Candida albicans. Seen in the elderly (do not confuse with the similarly named infantile eruption).
No comments:
Post a Comment