Full-Blown Agony: A Personal Battle With the Enigmatic Pain of Cluster Headache Syndrome

It was a dreary Monday morning in the autumn of 2016. I worked as a teacher, attempting to manage a new class, when a sharp sensation bloomed behind my right eye. Then came quick shocks, similar to electric shocks. As the school day came and went, the discomfort eased and then returned with greater force. Four times that day I handed over a colleague with activities and hurried to the school bathroom to douse my face with cool water. I tried ibuprofen, but the agony remained unbearable.

The attacks returned repeatedly that fall, and again in the spring, soon forming an yearly cycle. September and October were the worst, then February and March. I could predict the routine: a warning sensation in the shower, early pangs on the train, full-blown pain in class by mid-morning. In late 2019, a GP finally referred me to a neurologist and I was diagnosed with cluster headache disorder.

This condition often start with severe pain behind one eye that lasts up to three hours.

Approximately 1 in 1000 individuals suffer by the condition, and males are more often diagnosed. Cluster headaches typically begin with sudden, excruciating agony focused on one eye that reaches its peak within minutes and lasts for up to three hours. Episodes come in clusters, every day or several times a day, and are accompanied by red or watery eyes, sagging eyelids or face sweating. I have an episodic type, which occurs in seasonal bouts; others have continuous cluster headaches, defined by the absence of extended symptom-free periods.

What connects patients is the intensity. One study scored the pain at 9.7 out of 10, more severe than bone fractures or pancreatitis. Another found a significant percentage of cluster patients experienced thoughts of self-harm amid bouts; the number fell to 4% when they were pain-free.

Val Hobbs, in her seventies, a chronic sufferer from Wales, finds this understandable. Her attacks began when she was a toddler. “I would throw myself on the ground and bang my head. That was attributed to being spoiled,” she says. Her condition deteriorated through childhood. Alcohol in her teens, similar to several causes, made things more intense. After having sherry at her graduation party, she recalls barely being able to see on the transport home.

Her family often interpreted her episodes as drunken episodes. Support finally came from her parent and then from her husband, Rod. “I was very lucky to find such an exceptional person,” she says. Hobbs found clerical work after relocating, but often hid her illness. She was fired from one job, partly due to time off during episodes. Her definitive identification came in 2002 at a national neurology center.

Nevertheless, the inability to organize daily activities around unpredictable attacks took its effect. She particularly hated being unable to plan social events, being seen as flaky as a co-worker, and even having to be looked after by her children during the paralysis caused by the most severe episodes. “It steals from you of the small freedoms we don't appreciate until they're gone,” she says. She remembers obtaining tickets for a major concert, only to have an episode inside a facility.

Headaches have been documented across the ages. “The first account of headache comes by way of the Mesopotamians in 4000BC,” write experts in a publication on the topic. They attributed the disease to an malevolent entity who afflicted his victims' heads.

Historical healing records suggest bizarre remedies for what modern observers would classify as a headache disorder. In the medieval times, migraine was identified as a distinct condition, with therapies including herbal concoctions to other, more superstitious cures.

It was a European physician who provided the first detailed description of a cluster-type attack. In his writings, he describes a patient “afflicted with a very intense headache happening and vanishing daily at fixed hours”.

The disorder were only officially recognised by global headache societies in 1988. From the mid-20th century to the 1990s, they were thought to be caused by a issue with a key artery that delivers blood to the brain. Leading experts in diagnosing the condition note this.

In 1998, researchers released the findings of a research project for which they had induced cluster headaches in patients and monitored the episodes in a brain scanner. The data, featured in a major medical publication, showed activation of the hypothalamus, which is in charge for human sleep-wake cycles, when patients were in pain, and a deactivation when they recovered.

In spite of such progress, identification remains slow. One man's symptoms started in 1986 and felt like “a balloon being blown up behind my one eye”. Doctors thought he had sinus problems; he had four surgeries before eventually being diagnosed in 2014, after a physician looked up his symptoms.

Neurologists say wait times in diagnosing and managing occur because patients are rarely seen during an episode. “You're exhausted and depressed, but not in severe pain,” one says. He proceeds by ruling out other primary head pain conditions, such as tension-type headache, before diagnosing cluster headaches. A thorough patient history is crucial: on which side do signs occur? For how long? What season? Are there precipitating factors, such as alcohol? Certain features such as tearing, sagging eyelids and nasal congestion help confirm the diagnosis. Once diagnosed, patients may be referred to specialist clinics. But a lot of first go to emergency rooms or are given inadequate treatments.

Dorothy Chapman, 78, has suffered from cluster headaches for most of her life, although she has been free from an attack since 2016. When she was in her twenties, she had her molars pulled because dentists misunderstood her pain. She believes the dental profession still need much more education. When another patient sought help from a charity, it was she who responded. I remember calling a helpline during an bout in 2021; a calm volunteer guided me through oxygen therapy and drugs until the episode passed.

Official guidance on management advise that sufferers are offered high-dose oxygen and/or a anti-migraine drug delivered by injection. No tablets or strong analgesics should be used. Preventive options include verapamil, which reportedly helps manage the attacks of well-known people.

But consultant neurologists believe the guidance need updating to reflect a clearer treatment process and help GPs avoid misprescribing. For episodic patients, the treatment window is critical: “The duration of the cycle determines the approach.” Short bouts with occasional episodes are handled with abortive therapy only. More prolonged or more intense bouts require preventative medications such as certain drugs, sometimes combined with corticosteroids. Many patients also receive a nerve block injection during a cycle – an injection into the area of the skull where the pain is that decreases nerve activity.

The official guidance need revising to reflect a