More persistent or severe symptoms may not appear for 10 years or more after HIV first enters the body in adults, or within 2 years in children born with HIV infection. This period of asymptomatic (without symptoms) infection varies greatly in each individual.
The muscle contractions you feel is muscle fasciculation or muscle twitch. Twitching is caused by minor muscle contractions in one particular area, or the persistent and uncontrolled twitching of a muscle group in a distribution of a single nerve fiber or filament.he muscle contractions you feel is muscle fasciculation or muscle twitch. Twitching is caused by minor muscle contractions in one particular area, or the persistent and uncontrolled twitching of a muscle group in a distribution of a single nerve fiber or filament.
Most often, the spasms are caused by muscle strain from physical overexertion, muscle tension from stress or in reaction to pain at other locations, or physical overexertion from heavy lifting or strenuous exercise. For more information see neck pain causes.Muscles in the neck develop spasms that involve muscle contractions. This can result from sudden movements or twisting of the neck which puts compression on the muscle. This can cause excess stretching of the muscles which may tighten leading to pain.ost often, the spasms are caused by muscle strain from physical overexertion, muscle tension from stress or in reaction to pain at other locations, or physical overexertion from heavy lifting or strenuous exercise. For more information see neck pain causes.