p38 and JNK mitogen activated protein (MAP) kinase al losteric inhibitors are useful for treatment and/or prophylaxis of degenerative diseases of the nervous system. Compounds are used in a method for treatment and/or prophylaxis of the diseases and for use in therapy in general. The compounds bind to the region composed of amino acids at positions 170-199 of Mitogen-activated protein kinase 14 (Uniprot accession nr Q16539 or SEQ ID No 1) and/or Mitogen-activated protein kinase 11 (Uniprot accession nr Q15759 or SEQ ID No 2), SEQ ID NO.1 and SEQ ID NO.2 being the amino acid sequences of MAPK14 (ρ38α) and MAPK11 (ρ38β), respectively. The specific region composed of amino acids at positions 170-199 is herein disclosed as SEQ ID HO.4 for Mitogen-activated protein kinase 14 and SEQ ID NO.5 for Mitogen-activated protein kinase 11 and are believed to be new inhibitory binding sites.