All motor neuron diseases have similar symptoms, which can delay a clear and categorical diagnosis. Doctors familiar with ALS can, however, group together seemingly contradictory clinical indications and make a diagnosis sooner. In the early stages of their development, Doctors assess the first visible signs of ALS by performing clinic examinations and a series of diagnostic tests to eliminate common indicators of motor neuron disease. As the symptoms evolve into a process that can vary from one person to another. Finally, they converge into a precise form of motor neuron damage. In the case of ALS, detecting the presence of several categories of clinical indicators becomes increasingly relevant to support an ALS diagnosis.