de Quervain's tenosynovitis (dQT) is one of the most frequently reported soft-tissue rheumatism in pain physicians' day-day practice. Anomalous tendons in the first extensor compartment of the wrist, for example, the accessory abductor pollicis longus tendon, sometimes may be associated with dQT. Some dQT survivors may report dysesthesia over the thumb due to irritation of superficial radial nerve vicinity, a clinical scenario named 'Wartenberg syndrome'. My question is, how is 'Wartenberg syndrome' frequent with dQT?