Treatments / countermeasures
There has been a great deal of research into potential methods to relieve the effects of sleep inertia. The demand for remedies is driven by the occupational hazards of sleep inertia for employees who work extended shifts such as medical professionals, emergency responders, or military personnel. The motor functioning and cognitive ability of these professionals who must immediately respond to a call can pose a safety hazard in the workplace. Below are some of the various methods that have been suggested to combat sleep inertia. Napping
When a person is sleep deprived, re-entering sleep may provide a viable route to reduce mental and physical fatigue but it can also induce sleep inertia. In order to limit sleep inertia, one should avoid waking from the deeper stages of slow-wave sleep. The onset of slow-wave sleep occurs approximately 30 minutes after falling asleep, therefore a nap should be limited to under 30 minutes to prevent waking during slow-wave sleep and enhancing sleep inertia. Furthermore, self-awakening from a short nap was shown to relieve disorientation of sleep inertia as opposed to a forced awakening, but these results may warrant more research into the nature of arousal after sleep periods. Caffeine
Caffeine is a xanthine derivative that can cross the blood-brain barrier. The caffeine present in coffee or tea exerts its stimulating action by blocking adenosine receptors in the brain. By antagonizing the adenosine receptors caffeine limits the effects of adenosine buildup in the brain and increases alertness and attentiveness.
Diagnosis
Types
Granuloma annulare may be divided into the following types:: 703–5 
Localized granuloma annulare
Generalized granuloma annulare
Patch-type granuloma annulare
Subcutaneous granuloma annulare
Perforating granuloma annulare

Treatment
Because granuloma annulare is usually asymptomatic and self-limiting with a course of about 2 years, initial treatment is generally topical steroids or calcineurin inhibitors; if unimproved with topical treatments, it may be treated with intradermal injections of steroids. If local treatment fails it may be treated with systemic corticosteroids. Treatment success varies widely, with most patients finding only brief success with the above-mentioned treatments. Most lesions of granuloma annulare disappear in pre-pubertal patients with no treatment within two years while older patients (50+) have rings for upwards of 20 years. The appearance of new rings years later is not uncommon. History
The disease was first described in 1895 by Thomas Colcott Fox as a "ringed eruption of the fingers", and it was named granuloma annulare by Henry Radcliffe Crocker in 1902. See also
Granuloma
Necrobiosis lipoidica

References
External links
DermNet dermal-infiltrative/granuloma-annulare