Imagine that you are running on the treadmill at the gym and, suddenly, small red patches appear on the trunk, arms and legs, associated with burning or tingling… You stop the physical activity; gradually the symptoms ease. From then on, every time you practise intense physical activity, those plaques appear… Is it allergy to physical exercise ?? Cholinergic urticaria is a type of induced urticaria triggered by increased body temperature with day-to-day activities: physical activity, sweating, hot baths, consumption of alcoholic beverages and hot or spicy foods. Emotional stress can also be a triggering factor. When the stimulus ceases, the

Perioral dermatitis is characterized by “red bumps around the mouth” (small inflammatory papules and pustules). It can affect the mouth and, in some cases, the nose and eyes, so-called periorificial dermatitis. It can affect children, but it is more common in women between 20 and 45 years old. The etiology is unknown. In some patients, it is caused by the chronic use of topical corticosteroids. Other related factors are infection by Candida albicans or by bacteria, use of fluoride toothpaste and some cosmetics. At the site of the lesions, the patients have sensitivity or burning and itching. When in contact

The skin of the allergic patient is dryer. Genetic predisposition, changes in immune system and interaction with environmental factors contribute to the development of allergic diseases. Atopic dermatitis can manifest at any age, being more prevalent in infancy. It is a chronic, multifactorial disease of varying severity, evolving in outbreaks. It may be associated with other allergic diseases such as rhinitis and asthma. The lesions are characteristic of each age group. The itching is always intense. In atopic dermatitis, the skin barrier is compromised. Thus, the skin is more susceptible to bacterial, fungal and viral infections, which can aggravate the