A form of combined immunodeficiency characterized by recurrent viral, bacterial, mycobacterial and fungal infections from birth, chronic diarrhea, pneumonia, meningitis, enteritis, gastrointestinal candidiasis, sepsis and otitis media. All patients present with ectodermal dysplasia that is characterized by hypocalcified amelogenesis imperfecta and leads to the loss of soft dental enamel. In addition, patients present at birth with congenital myopathy, which is characterized by non-progressive generalized muscular dysplasia. Caused by mutations in the ORAI1 and STIM1 genes (12q24 and 11p15.5). Transmission is autosomal recessive.