It also has a monthly newsletter and many pamphlets on a variety of topics related to the different headache syndromes.

Scientists are now largely convinced that the overuse of medication can interfere with the brain's own pain-control system, paving the way for chronic headache syndromes.

When the headache does not clearly fit into one of the recognized primary headache syndromes or when atypical symptoms or signs are present then further investigations are justified.

Various medications that are often used in other headache syndromes such as nonsteroidal anti-inflammatory drugs, acetaminophen, tricyclic antidepressants, calcium channel antagonists do not relieve the symptoms of SUNCT.

While, statistically, headaches are most likely to be primary (non serious and self-limiting), some specific secondary headache syndromes may demand specific treatment or may be warning signals of more serious disorders.

It is one of the types of primary headache syndromes that present as a chronic daily headache, which is a headache present for more than 15 days a month for more than 3 months.

In the last few years, researchers have come to suspect that caffeine withdrawal might explain certain previously perplexing headache syndromes: weekend headaches and post operative headaches, both of which may occur when patients miss their routine coffee.

However, in primary headache syndromes, unlike in neuropathic pain, there can be a considerable delay of several weeks to months before the response emerges and therefore the utility of a stimulation trial in selecting patients for permanent implantation remains questionable for now.