In Energies of Transformation, chapter 2, Bonnie Greenwell goes into great detail about the symptoms involved. If you think you are experiencing a kundalini awakening we recommend you read her book.

The following is a brief summary of the main categories symptoms fall into. She suggests that when experiences fall into several of these categories it indicates a high probability of kundalini awakening...

1. Pranic movements or kriyas

These may be intense involuntary body movements, shaking, vibrations, and jerking, or sensations of electricity, tingling, and waves of energy flooding the body. In many cases kriyas cause the body to bend and flow into unusual postures. The term kriya is sometimes defined in yoga as "the power of assuming any and every form."

2. Physiological problems

These may include the emerging of a latent illness or pseudo-illness, apparent heart problems, gastrointestinal disorders, nervous problems, eating disorders, and pains occurring in various parts of the body, especially along the spine and in the head. There are many internal sensations such as heat, burning, itching, out-of-body or expanded senses, high sensitivity, hyperactivity, lethargy, extreme variations in sexual desire and other symptoms. Physical problems related to Kundalini are invariably difficult to diagnose and treat.

3. Yogic phenomena

The body may involuntary perform yogic postures (asanas) or hand movements (mudras) never before seen by the subject, and the psyche may produce geometrical images or chants, Sanskrit words, tones and a variety of specific sounds commonly recorded in the yogic tradition.

4. Psychological upheaval

There can be an intensification of unresolved psychological issues, fear of death or insanity, mood swings, and waves of anxiety, anger, guilt, or depression as well as profound compassion, unconditional love, and heightened sensitivity to the moods of others. One feels a compelling need to recognise and resolve emotional problems, and sometimes spontaneous rituals are enacted that symbolise deeply held conflicts.

5. Extrasensory experiences

These may include atypical perceptions (lights, symbols, images of entities, the reviewing of what appears to be other lives, and visions), or auditory input (hearing a voice, music, phrase or continual inner sound), or olfactory sensations (the scent of sandalwood, perfume or incense).

6. Parapsychological experiences

Precognition, healing abilities, reading the minds of others, unusual synchronicities, electrical sensitivity and psychokinesis are commonly reported occult phenomena.

7. Samadhi or satori experiences

These states imply an absorption of consciousness into a condition of unitive awareness, and their impact is to bring on sensations of deep peace, wisdom, and sometimes experiences of light. Less complete trance states may also occur which bring tranquillity, joy, and overwhelming waves of bliss during or after meditation, and sometimes spontaneously.