<s>[INST] Hey Im Lala & Im Really Worried... Okay A Couple Of Weeks Ago I Woke Up In The Middle Of The Night In I Felt This Little Lump On My Neck But When I Woke Up That Morning It Was Gone.... Im Really Worried Cause It Came Back This Morning& Left AgainThis Morning.. Please Help [/INST] Hi! There is nothing to worry about this kind of vanishing small lumps and just forget about this! We get such cases regularly where the lump is still there but not usually palpable as the size has decreased much, and we get following diagnoses:1. A tiny enlarged lymph node due to some mild local infection2. Skin edema or allergic/purpuric rash due to minor trauma etc.3. Vascular tumor-like lesions like hematoma etc.Therefore, keep watch of the lump and if enlarging get it to physicians attention for relevant tests/management; regards, </s>