Pityriasis (Tinea) versicolor is a fungal infection caused by Malassezia furfur. It is benign, superficial, and localized to the stratum corneum.
It may present as chronic or recurrent infection and may occur in healthy individuals.
It is more common in summer than winter months.
It presents with multiple well-demarcated macules or patches and finely scaled plaques with hypopigmentation or hyperpigmentation, hence the term "versicolor".
Lesions are usually found on the upper trunk, chest, back and shoulders, and may extend toward the neck, face and arms.
The occurrence and severity of hidradenitis suppurativa (HS) are associated with micronutrient status and obesity, suggesting that weight loss and dietary modifications should be considered in the treatment of HS patients, according to the results of a systematic review and meta-analysis.
Oral H1-antihistamines are the initial treatment of choice for allergic rhinitis (AR) and chronic urticaria in the primary care setting. However, in a diverse population of patients with AR and urticaria, primary care physicians are faced with the challenge of prescribing the best therapy amid a wide armamentarium of antihistamines available.