A wound dressing (10) comprising: a) a substrate (12) of a flexible material with first and second end portions (18, 20) and first and second main surfaces (14, 16), and with a layer of adhesive medical grade pressure sensitive (22) on the second main surface (16); b) only a single wound contact pad (24) centrally disposed between the first and second end portions (18, 20) and adhered to the substrate by means of the adhesive layer; c) a relatively rigid sheet element (34) having a removable material on its lower surface and a plastic layer (35) on its upper surface, the plastic layer defining a dome-shaped capsule (28) with a seal breakable (32) and containing a medicament, the capsule protruding above from the sheet element (34) and being arranged on the substrate (12) next to one (18) of the first and second terminal parts (18, 20) so that when compressed, the breakable seal (32) is broken due to the increase in the hydraulic pressure acting on the seal and deposit the medication directly on an upper surface of the wound contact pad; and d) a removable protective layer of material (26) adhered to the substrate with the adhesive layer (22) and covering the other adhesive layer of the end portion and the wound contact pad (24), and with the element of sheet (34) and the capsule (28) covering said one (18) of the first and second terminal parts.Un apósito para heridas (10) que comprende: a) un sustrato (12) de un material flexible con primera y segunda partes terminales (18, 20) y primera y segunda superficies principales (14, 16), y con una capa de adhesivo de grado médico sensible a la presión (22) en la segunda superficie principal (16); b) solo una única almohadilla de contacto con la herida (24) dispuesta centralmente entre la primera y la segunda partes terminales (18, 20) y adherida al sustrato mediante la capa de adhesivo; c) un elemento de hoja relativamente rígido (34) que tiene un material desprendible en su superficie inferior y una capa de plástico (35)