Hereditary angioedema: not an allergy.

Hereditary angioedema is a genetic disorder due to a deficiency or malfunction of C1 esterase inhibitor. We herein describe a case of 25-year-old male who presented with swelling over face since one day. There was history of similar episodes since two years with gradual subsidence of swelling without any treatment. Investigations revealed grossly reduced complement C4 and C1 esterase inhibitor level. Patient was diagnosed to have hereditary angioedema type 1 and started on stanozolol 2 mg three times a day with no recurrence in one year of follow-up. Hereditary angioedema resembles angioedema of an allergic reaction. However, the cause is different.

Alopecia in congenital hidrotic ectodermal dysplasia responding to treatment with a combination of topical minoxidil and tretinoin.

Clouston's syndrome is an ectodermal dysplasia characterized by dystrophic nails, alopecia, and palmoplantar hyperkeratosis. Alopecia is due to decrease in number and degree of maturation of the hair follicles. Tretinoin is a mitogen by itself and also enhances the absorption of minoxidil which acts by enlarging the miniaturized hair follicles. We report a case of alopecia in Clouston's syndrome who responded to treatment with topical minoxidil and tretinoin.