SUNCT syndrome: VII. Ocular and related variables

SUNCT is a unilateral headache syndrome with shortlasting attacks, accompanied by e.g. conjunctival injection and lacrimation on the painful side. Intraocular pressure (IOP), corneal indentation pulse (CIP) amplitudes, episcleral venous pressure, and corneal, tympanic, and facial temperature have been studied in 6 SUNCT patients. IOP and CIP amplitudes increased on the painful side during headache paroxysms, while episcleral venous pressure remained unchanged. Corneal temperature seemed to increase during attack on both sides. However, the number of observations during attacks is scanty. Outside of attacks, the corneal temperature on the symptomatic side seemed to be higher when compared with the non-symptomatic side (generally > or = 0.5 degrees C), provided that the attack frequency was high. The facial temperature seemed to be even on both sides or slightly higher on the symptomatic than on the non-symptomatic side in the periocular area. This pattern seems to be different from the one in trigeminal neuralgia, in which the temperature has been reported to be lowest on the painful side of the face. During attacks, there seemed to be a tendency for the temperature to increase in the periocular area, but not over the mandible or in the neck. The results obtained could be caused by increased blood supply to the eye (and the surrounding skin) on the symptomatic side because of vasodilatation during repeated pain attacks. As far as the ocular changes are concerned, probably the arteriolar side of the vascular bed is involved.

Shortlasting unilateral neuralgiform headache attacks with conjunctival injection, tearing, sweating, and rhinorrhea

Three grown-up males with a long-lasting history of rather uniform, unilateral headache in the ocular-periocular area, in cluster fashion, are examined. Pain paroxysms of short duration (15-60 sec) appear up to 5-30 times per h. The headache is unilateral without side shift. Conjunctival injection appears at the very beginning of the attack and is partly massive, lasting the entire duration of the attack, and fading away at the end of it. Tearing (massive), forehead sweating (subclinical) and rhinorrhea, all on the symptomatic side, accompany the attack. In the youngest patient, the headache became chronic after clustering for six months initially, and after approximately 3 1/2 years it became bilateral. However, even in this patient, a clear unilateral pain preponderance prevails, and the autonomic disturbances are all on the original pain side. Attacks can partly be precipitated by chewing, eating (e.g. citrus fruits), moving the head, etc. The headache is completely refractory to drug therapy, including indomethacin.

Ocular complications after intracarotid BCNU for intracranial tumors

112 patients with intracranial tumors treated with intracarotid BCNU to a cumulative dose of 370 mg/m2 body surface have been examined retrospectively for ocular complications. Average follow-up was 494 days (range 5 months-5 years). The rate of ocular complications was 2.7%. There was 1 case of hemorrhagic glaucoma with amaurosis and an accompanying oculomotor palsy, 1 case of retinal branch artery occlusion combined with third nerve paresis and 1 case of oculomotor palsy.