Syphilis of the spinal cord includes spinal tuberculosis, syphilitic meningitis and myelitis, and syphilitic meningovascular syphilis. The specific clinical manifestations are as follows:
Firstly, tabes dorsalis
It usually occurs 15 to 20 years after syphilis infection, more common in males, with main symptoms such as lightning-like pain, sensory ataxia, and urinary incontinence. The main signs include the disappearance of the patellar and ankle reflexes, impairment of the vibration and position sense in the lower limbs, and a positive Romberg's sign when closing the eyes.
1. Ocular manifestations: More than 90% of patients have abnormal pupils, usually presenting as unequal, small, and irregular pupils, with the absence of light reflex but the presence of accommodation reflex. Most of them are accompanied by ptosis and varying degrees of ophthalmoplegia. Optic atrophy is also common.
2. Sensory disturbance: More than 90% of patients experience lightning-like pain, more common in the lower limbs, but can also pain from the face to the lower limbs. The pain is sharp and transient, with a nature resembling lightning, knife-cutting, or tearing, and occasionally persistent pain in one place. Ataxia is simply caused by deep sensory disturbance, with a gait that is unsteady and lurching (with excessive elevation of the lower limbs during walking, more forceful stepping, and uneven size of each step). In the late stage, even if the muscle strength is intact, it is difficult to walk.
3. Sphincter dysfunction: Due to the damage of the posterior roots of the lumbar 2-4 segments, affecting bladder sensation, the bladder is full without the desire to urinate, resulting in overflow incontinence.
4. Organ crisis: The most common is gastric crisis, presenting as sudden epigastric or upper abdominal pain, which can extend to the chest, with a sense of contraction in the chest, accompanied by nausea and vomiting. Vomiting is often repeated until bile is vomited. After the attack, the patient often feels exhausted and the skin over the upper abdomen is sore. In the crisis of the small intestine, there are severe cramps and diarrhea. In the crisis of the pharynx and larynx, there are attacks of dysphagia and difficulty in breathing. In the rectal crisis, there is urgency and a feeling of tenesmus. In the genitourinary crisis, there is pain and difficulty in urination. Besides the gastric crisis, other crises are rare.
Secondly, syphilitic meningomyelitis and meningovascular syphilis
It usually occurs 3 to 5 years after syphilis infection. Syphilitic meningomyelitis, mainly due to the damage of the bilateral corticospinal tract, and some involving the meninges mainly, often manifests as neck and shoulder pain, muscle atrophy, and long tract signs in the lower limbs due to thickening, adhesion of the meninges, and compression of the nerve roots and spinal cord.
Syphilitic meningovascular myelitis mainly involves the vascular involvement, often caused by thrombosis of the spinal cord vessels due to endarteritis. The disease onset is rapid, and the symptoms depend on the range of the vessels involved. Occasionally, anterior spinal artery thrombosis can cause an anterior spinal artery syndrome, with deep sensation remaining intact.