MST1 deficiency shares with DOCK8 deficiency and Wiskott-Aldrich Syndrome (WAS) the occurrence of skin abscesses and superficial infections with bacterial (Staphylococcus aureus), viral (Molluscum contagiosum, Herpes simplex, Varicella zoster and Human papilloma virus) and fungal (Candida albicans) pathogens. This evidence concerns the gene MST1 and Cutaneous abscess.