Two Cases of Paradoxical Nonscarring Alopecia after Mesotherapy with Dutasteride.

Alopecia after mesotherapy with dutasteride is an extremely rare complication. Dutasteride is a second-generation 5a-reductase enzyme inhibitor that decreases serum dihydrotestosterone levels by 90%. It inhibits both type 1 and 2 enzymes, whereas finasteride inhibits only type 2.

Perianal Hyperhidrosis Successfully Treated with Botulinum Toxin A.

Perianal hyperhidrosis (HH) is a rare form of primary focal HH and may become a major problem for the patient with a significant psychosocial burden and negative impact on the quality of life. Botulinum toxin injections are widely used as a second-line treatment option for axillary, palmar, and plantar HH with a good safety profile. Herein, we pre-sent a case of primary perianal HH successfully treated with Botulinum toxin A at a dose higher than that previously reported in literature, with a longer response, a higher degree of satisfaction, and no adverse effects.

Successful treatment of idiopathic Harlequin Syndrome with oxybutynin and propranolol.

Harlequin syndrome (HS) is a rare entity derived from the dysfunction of the sympathetic nervous system. It is characterised by unilateral facial flushing and sweating induced by exercise, heat and emotion. Most cases are primary with an unknown pathogenic mechanism.

Clinical and ultrasound response to intralesional sodium thiosulfate for the treatment of calcinosis cutis in the setting of systemic sclerosis. A case-based review.

Calcinosis cutis (CC) is defined as the deposition of calcium salts on the skin and subcutaneous tissue. It is associated with different conditions, including some autoimmune diseases, and it can generate significant inflammation, pain, and functional impairment. Different therapies have been tried with limited results.

[Odontogenic cutaneous fistula: a diagnostic challenge].

Unlabelled: Odontogenic cutaneous fistula (OCF) is the result of an abnormal canalization originating from chronic periapical infection. It represents a diagnostic challenge, as it is frequently misdiagnosed as dermatological lesion. There is a broad differential diagnosis, including pyogenic granuloma, cutaneous tuberculosis or congenital malformations, among others.

[Frontal fibrosing alopecia: a pathology on the rise].

Frontal fibrosing alopecia (FFA) is a scarring alopecia whose incidence is increasing significantly in our country. It is characterized by loss of frontotemporal hairline that mostly affects postmenopausal women, with a negative impact on quality of life. It is associated with early menopause in 14% of cases and hypothyroidism in 15%.